Environment

Learning to Dive – Part Two

| Rebecca Gibson

On the second day of Open Water weekend (read about Day One here), I awoke to the alarm feeling a lot more confident. We were halfway through, with two dives down and two to go. The weather had deteriorated slightly and as I waited for the morning briefing it began to drizzle, but hopefully that meant the day would be slightly warmer (I was clinging to any silver lining).

My wetsuit was still damp from yesterday, so dragging it up my legs was even more impossible than usual. It was the reverse of a snake shedding its skin, and as I hopped about and contorted my limbs I couldn’t help feeling extremely silly. Finally it was on, and I doused myself in hot shower water in a vain attempt to warm up before facing the quarry.

Dive three was the most daunting, as it required a longer list of skills, including the dreaded mask removal. Perhaps I was jittery from nerves, because as I began my descent pain shot through my right ear and I hovered, trying and failing to equalise my ears. As you descend, the increased pressure compresses air spaces in your ears, sinuses and mask. Failing to add air to these spaces can cause serious injuries. I eventually had to resurface until I could equalise, then made my way back down. It was a setback that I tried not to concentrate on, especially with my least favourite skill coming up.

We gathered on the platform and took it in turns to fully flood our mask and take it off. I disliked this skill so much because the air bubbles that gather underneath the nostrils feel like water shooting up your nose. When I attempted this in the pool I had the sensation of not being able to breathe; quite a daunting prospect when you’re seven metres underwater and definitely cannot shoot up like a cork to the surface. In preparation, I’d been putting my face underwater in the bath and breathing through a snorkel, and although it triggered several involuntary swallows I could just about manage it.

Taking a deep breath, I pulled the strap over my head and held my mask away from my face, placing it back over as soon as I was allowed. Feeling very pleased with myself, I ran a finger around my hood to check the seal and cleared the water out ready for the next skill. But as we made to swim off the platform, the mask flooded again. I cleared it, and water immediately trickled back in. I signalled to the instructor who checked the seal and couldn’t find the cause of the problem, so once again we surfaced and I made absolute sure I’d sorted it out.

As I descended for the third time on the same dive, I reflected that I’d encountered an unforeseen problem and dealt with it without panicking; I had made serious progress since my first session in the pool. The rest of the dive passed with no further mishaps, and as I had my fifth hot shower of the day I finally began to relax. Our fourth and final dive wouldn’t be full of tests and I could enjoy the experience of feeling weightless in water and exploring Stoney Cove.

After a brief time on the surface and a delicious cheeseburger at Nemo’s, we took a giant stride back into the quarry. We’d planned dive four ourselves, and led the instructors down to the aircraft cockpit and along the shelf that tumbled down to 22m on the other side. Staying firmly away from the edge, we swam across to the Nautilus again and back to the platform, where we gathered for the last time. Alan, the instructor, had an underwater notebook with him, and one by one turned it to face us. I don’t think I’d ever been so happy to read the words:

“You’ve passed. Congratulations!”

 

 

I Need Your Help for Wildlife Blogger of the Year!

| Rebecca Gibson

If you love wildlife, then I need your help!

I’ve entered the Wildlife Blogger of the Year 2018 competition, organised by Terra Incognita. The theme is “a favourite wildlife moment of 2018”, and I chose my encounter with a wild grey seal in the Farne Islands, which some of you may remember reading about.

I chose this story because it was an incredibly special experience and a reminder to me that we should not be constantly connected to technology. I had a GoPro with me while I was snorkelling but was so surprised by what happened that I completely forgot to film. At first I was disappointed, but on reflection I am so glad that I stayed in the moment and didn’t miss a single second. I interacted with a wild animal with absolutely no distractions, and it has become one of my most precious memories of time spent in nature. I hope my story reinforces the need to connect with wildlife and shows just how rewarding it can be.

As well as the overall winner of Wildlife Blogger of the Year, picked by a panel of judges, there is the Reader’s Choice winner award, which anyone can vote for. If you enjoy my story, I would be thrilled if you could cast me your vote.

You can read my story and vote for me by following this link. Thank you so much!

Learning to Dive – Part One

| Rebecca Gibson

The alarm went off at 6am and my stomach began to churn. Today was the start of Open Water weekend, and if all went well, I would earn my first diving certification. Having struggled with some of the skills in the swimming pool, not to mention the fact I was still getting used to all the kit, I couldn’t help feeling apprehensive as I pulled on my warmest clothes. I hastily gobbled a petrol station flapjack, which tasted like cardboard in my dry mouth. Knowing I shouldn’t be feeling so anxious, I tried to shake the nerves and triple-checked I had everything I needed.

Luckily, the site was only a five-minute drive from the hotel, and I arrived in plenty of time. Stoney Cove used to be a stone quarry that was used in the 1960s and 70s to train commercial divers and test underwater equipment used in oil fields. Now, Stoney Cove has conference rooms, shower facilities, a shop and – most importantly after a tiring dive – a pub called Nemo’s. The actual quarry is a multi-level city of shipwrecks and aquatic life, split up into areas of different depths for divers of all abilities. As this was our first open water dive, we stayed safely in the 7m limit, which still contained a submarine and an aircraft cockpit. Although, I was more interested in the crayfish, perch, roach and pike that called Stoney Cove home.

It was a cold but clear day, with sunlight pouring weakly onto the water. No rain at least, though I suppose rain shouldn’t really be a concern for divers. As I stood at the quarry’s edge watching seagulls floating on the surface, I couldn’t quite believe I would soon be diving several metres beneath it.

Soon it was time to start kitting up. We assembled in buddy pairs and helped each other don scuba kits just like every week at the pool. This time, however, we also had hoods, gloves, compasses and a dive computer. We made our way down to the ramp, where several divers were already in the water. For dive one all we had to do to enter the water was stand on the edge and sit gently back, floating out into the quarry.

Ungainly as always with my cylinder and weights, I felt like a tortoise on its back as I tried to strap on my fins. Eventually I was ready, and made my way hesitantly to the edge of the ramp. I turned, squatted and leaned back. The shock of freezing cold water rushing into my wetsuit wasn’t exactly comfortable, but in a strange way it was exhilarating. This was it, time to dive.

Once everyone was in the water, we began our first descent. As more of my body became submerged, I soon grew numb to the cold and instead focussed on the underwater world we were entering into. I descended to the bottom, making sure to equalise my ears to the increasing pressure, and looked around. The visibility wasn’t superb and the only features I could make out were other divers, but the murkiness only added to the suspense. It still felt strange not to have to work to stay down in the water, instead floating effortlessly.

The instructors led us on a swim, past the Nautilus submarine to a wooden platform where we would perform our skills. An underwater classroom surrounded by shipwrecks and fish; it was quite extraordinary.

After each taking turns to carry out the skills, we started our ascent. For the first time on the dive I looked up, and the sight was breathtaking. Sunlight streamed through the water in slanted shards that lit up our bubbles as they cascaded upwards. I still hadn’t got my head around being able to breathe underwater. It had been a dream of mine as a child, pretending to be a dolphin in the local pool. I wasn’t quite a dolphin yet, but I was closer to the underwater world than ever before.

Coming soon: day two of Open Water weekend!

Why are Island Tortoises so Large?

| Rebecca Gibson

New research has shown that giant tortoises may not be large because of their island lifestyle, as previously thought. A team of researchers has gathered extensive genetic data from both living species and fossils of extinct species to discover the truth of how tortoises have evolved, in an attempt to answer the question of how they have become such giants.

Tortoises are an extremely diverse group of animals, ranging in size from 8cm long to one metre long. The largest species is the Galápagos tortoise, which can weigh nearly 500kg. So why has gigantism evolved in tortoises? Despite studies on these fascinating animals since Darwinian times, the answer is still unclear. It was thought that, like many species, tortoises followed the “island rule”: a tendency of dwarfism among large animals and gigantism of small animals living on islands. For example, in mainland Florida the white-tailed deer is abundant, but in the Florida Keys – a tropical archipelago of islands off the south coast of the state – a dwarf version of the mainland deer is found, known as the Florida key deer.

It is thought that island dwarfism is caused by limited resources, while a reduced pressure from predators triggers island gigantism. However, in the case of tortoises, it was suggested that these animals were already large in size before colonising remote island habitats. With so many giant tortoise species now extinct, it is impossible to uncover the reason behind gigantism in these animals without using the fossil record.

Galapagos_giant_tortoise Matthew Field
A dome-shelled Galápagos giant tortoise (Credit: Matthew Field) http://www.photography.mattfield.com

Now, Dr Evangelos Vlachos from the Paleontological Museum of Trelew in Argentina and Dr Márton Rabi from the Martin Luther University Halle-Wittenberg put together the most complete family tree of both extinct and surviving tortoise species so far, in an attempt to piece together the reasons for their variation in size. Interestingly, it was discovered that gigantism occurred on the mainland too, in Africa, Europe, Asia, North and South America. Interestingly, all of these mainland species became extinct.

“The fossils highlight a great number of extinct mainland giant species and suggest that the evolution of giant size was not linked to islands,” says Dr Evangelos Vlachos, “We expect that warmer climate and predator pressure plays a role in the evolution of giant size but the picture is complex and our sampling of the fossil record is still limited.”

So what led to the extinction of these giant mainland tortoises, and why have their island variants survived? It is thought that predation and climate change contributed to these extinctions, but it is intriguing to think that the island rule may not be the overriding factor for giant evolution, calling for more research into what causes such variation in size among these animals.

Tortoises have roamed the planet for over 55 million years – they survived the mass extinction that wiped out the dinosaurs, but now face an even graver threat: people. Human-induced habitat loss is the most significant threat for tortoises today, and they face an uncertain future. Thanks to research such as Vlachos’ and Rabi’s, we are able to better understand how these successful animals have evolved, and will hopefully continue to evolve for many more years to come.

To read more on this research, visit Science Daily.

To Catch A Fly

| Rebecca Gibson

Fly agaric, or Amanita muscaria, is perhaps one of the most recognised mushrooms in the UK. It is often used as perching posts for pixies and gnomes in storybooks, and can regularly be seen bringing a spot of colour to the forest landscape. With its blood red cap and white spots, it’s almost unmistakable. Fly agaric can be found from late summer throughout winter, dotted around birch, spruce and pine trees.

As is often the case in the natural world, pretty means dangerous. With a name derived from its ability to kill flies, fly agaric has been widely used as an insecticide. It is a poisonous mushroom known for its hallucinogenic properties but, despite this, it has been a part of religious tradition for thousands of years. In Hindu practice, fly agaric was supposedly used to produce a psychedelic drink called soma, taken as part of religious ceremonies to increase one’s awareness and evoke sensations of bliss, poetic inspiration and even immortality. However, there has been disagreement among modern scholars over the exact ingredients in this psychoactive beverage. Soma has been described as containing a plant with leaves and flowers, contrast to fly agaric.

Elsewhere in ancient history, fly agaric was consumed in potion-form by Vikings in the 8th century, allowing them to fight in battles with increased frenzy. And of course, Alice used the mushroom to change her size in Wonderland, after being instructed to do so by a smoking caterpillar with a ‘languid, sleepy voice’.

Though perhaps this wouldn’t be the recommended theme in modern children’s literature, it shows that the mysterious fly agaric has woven a complex and intriguing story through the ages. Now, as autumn descends, the fungi season is in full swing. Fly agaric sits radiantly among more drab varieties of mushroom, its vibrant colour a dangerous lure. It is a specimen that has fascinated us for centuries, and will continue to intrigue long into the future.

IMG_1026-2

A Silent Extinction

| Rebecca Gibson

Giraffe have always been special to me. Even with long, gangly limbs, they move with unhurried poise and confidence, but still look endearing with their huge eyes and long eyelashes.

On TV this week there was a repeat of an episode in Attenborough’s Natural World series: Africa’s Gentle Giants. The story centred on Dr Julian Fennessy, Co-Founder and Co-Director of Giraffe Conservation Foundation. Fennessy has been working to conserve giraffe for more than 20 years, and is a true pioneer in research on this secretive and surprisingly little-known animal.

Many people, including myself until very recently, are naïve to the true situation that wild giraffe currently face. Among other African species such as elephants, gorillas and leopards, for some reason giraffe have taken a backseat in the public eye. While words like “beautiful” and “majestic” always spring to mind when we talk about giraffe, how many of us could confidently say how many there were? I was shocked to discover how wrong I was when giraffe statistics were presented alongside those of another African giant. Currently, there are around 500,000 African elephants left, but only 90,000 giraffe. For the first time ever, I doubted what David Attenborough was telling me. How could that be possible? I began to look online, but of course it was true. There are nearly five times as many African elephants than giraffe left on the planet. It’s a statistic that astounded me.

IMG_2107
Source: BBC*

Giraffe are not only unmistakable symbols of Africa and the tallest animal on Earth, but they are important to the ecosystem. Like bees, giraffe are excellent pollinators, and pass pollen from tree to tree as they graze. They also spread seeds in their dung, another vital part of maintaining a diverse and sustainable landscape. Conserving giraffe protects not only the animal but its environment, ultimately affecting so many other species that call Africa home.

In two decades, giraffe numbers have fallen by 40% and they have become extinct in seven countries. They are hunted for meat and their habitats are slowly disappearing. One of the most vulnerable populations – a group of less than a thousand Rothschild’s giraffe – lives in Murchison Falls National Park in Uganda. These animals are walking on a literal time bomb; beneath their feet lies 75% of Uganda’s discovered oil, and Fennessy knew that plans to drill would spell disaster for these endangered animals. His ambitious and dangerous mission was to relocate twenty giraffe from one side of the River Nile to the other, where it was hoped that these pioneering individuals would start a new population in a safer location.

As I watched the team of dedicated vets, rangers and scientists attempt to move one-ton animals whose kick could decapitate a man, I was filled with such admiration and respect. It is all very commendable to donate money to charity, but these people were out in conflict areas risking their lives for giraffe. As the mission progressed, I got quite emotional, not just because the threats these beautiful animals face are so unnecessary and unjust, but because I was completely unaware. What little chance these animals have if even wildlife enthusiasts like me don’t know their situation.

It wasn’t just the numbers of giraffe that I was unaware of; so much of their behaviour remains unseen to even experts like Fennessy who have studied them for a vast proportion of their lives. By the Hoanib River in northwest Namibia, he took a sensitive camera out to film giraffe at night. As he watched, a giraffe curled up on the exposed ground and fell asleep. It was something Fennessy had never witnessed before.

“In zoos they study it,” he explained, “Basically when their neck is down it’s REM sleep, so maybe these giraffe are dreaming. I’ve never seen that in the wild.”

IMG_9649

The fact that we don’t know how wild giraffe sleep says a lot about how overlooked they are. It seems there is the assumption that because we don’t hear about a particular animal as much, it must be doing fine. However, in the case of the giraffe this couldn’t be further from the truth. So why do we know so little about these animals? Perhaps it is because they are only listed as “Vulnerable” on the IUCN Red List of Endangered Species. An article published two years ago, at the time that this episode was first released, hopes that the work Fennessy is doing will help change the status of giraffe to “Endangered” or “Critically Endangered” and therefore encourage greater conservation efforts. Unfortunately, as 2018 draws to a close, the giraffe is still listed as “Vulnerable”. I can only hope that this change in status does come into effect to raise awareness of this silent and rapid extinction that is passing so many of us by, or soon it may be too late.

 

*Natural World “Giraffe: Africa’s Gentle Giants.” (2016) BBC. 23rd June.

 

The Greenway

| Rebecca Gibson

The Egan’s Greenway is an unexpected jungle in the middle of smoke-belching industry and deckchair tourism. The mundane sounds of traffic are deafened by the furious chatter of cicadas – enormous insects that seem prehistoric. Their strange call is like the sound of angry water sprinklers, growing louder and faster until it reaches an alarming tempo, then abruptly stops.

IMG_0497

At first light the Greenway is sharply divided into light and dark. The dense, impenetrable forests are still cool – the trees in muted greens – but out on the marsh the grass is alight with fiery golds and oranges. Naked trees poke the sky with sharp limbs white as bone, while beside them sway lush evergreens. It is a land of stark contrast, a spectrum of vitality and decay. Time passes here with the tick of the cicadas.

IMG_0560

The day warms up, throwing a shimmer onto the surface of the creek. Here there be dragons, some cruising between reeds on transparent wings, others scrambling up trees with long claws. A flash of movement and then a disappearing act, they blend seamlessly into their surroundings. Just a flick of the beady eye will give them away, and then they will shoot off into the undergrowth.

IMG_0638

Other beasts can be found higher up. Perched on the skeleton fingers are ospreys, scanning the creek in every direction. One takes to the air and its mate follows. Together they wheel in deep circles, overlapping in smooth figures of eight. A wood stork, large enough to be unfazed by the raptors, joins their sky with dark wings barely flapping.

IMG_0582

Then, a real dinosaur. A creature that survived what forty-metre sauropods could not, almost unchanged for millions of years. This one is only small, an arm’s length perhaps, but even so it floats beneath the water’s surface with the stealth of an adult, startling green eyes always watching. A glance away and back again and it has disappeared, moving across the creek without a sound.

Where is mum? Perhaps it is best not to stay and find out.

IMG_0656

Meet the Neighbours

| Rebecca Gibson

After a busy week getting to grips with my new routine in Florida and getting stuck into all sorts of exciting work at the SEZARC lab, I was invited onto a tour of the White Oak site. Having only had glimpses up until now – mainly the white rhinos whose enclosure runs alongside the road to the lab – I was eager to see all of the animals that live at White Oak.

Our first stop was the greater one-horned rhino, and I was thrilled to see one of the females had a calf. The clue to the most immediate difference between these individuals and white rhinos was in the name; white rhinos, from Africa, have one more horn than the greater one horned, and they’re typically larger. To compensate for a shorter horn, these rhinos – from India and Nepal – have very long lower incisors that are used during fights and can grow up to 8cm long in males.

IMG_9548

The armour-like skin gives these rhinos the appearance of a prehistoric creature. It is deeply folded to increase the surface area for water absorption, and especially thick around the neck to protect this vulnerable area. Greater one-horned rhinos have a prehensile lip that they use to forage in scrub and foliage.

IMG_9554

White rhinos, on the other hand, are known as square-lipped rhinos and shed grass like a lawnmower. As we watched them graze we saw they were surrounded by cattle egrets, a common sight at White Oak. These white, gangly birds follow large mammals around their enclosures, as their weighty footsteps disturb insects hidden in the ground below, which the egrets take full advantage of.

IMG_9577

Next we headed off to find the Somali wild ass, a species I had never heard of but fell completely in love with. Found in East Africa, Somali wild ass are the smallest and also the rarest wild horses (equids) in the world, with fewer than 2000 left in the wild. They have a beautiful grey coat that almost appears purple in a certain light. Reminiscent of their relative the zebra, these wild ass have characteristically striped legs. Due to competition with domestic farm animals for grass and water, these animals have become critically endangered. In response, White Oak obtained a herd in 2008, and since then have raised twenty foals.

IMG_9594

Nearby to the Somali wild ass was another species I hadn’t come across before: the gerenuk, meaning “giraffe-necked” in Somali. These slender antelope are golden in colour with extraordinarily large necks, ears and eyes. Interestingly, these antelope rear up onto their hind legs to get to even higher places.

IMG_9615

One of the final stops on our tour was an unforgettable moment for me: the giraffes. I’ve always had a soft spot for giraffes, and today I had the extraordinary surprise of being told I could hand-feed one. His name was Griffin, and as soon as the bus stopped he came striding over, keenly peering in through the window. One by one, we took a piece of browse and lifted it high, and Griffin gently took it. It was such a treat and a moment I will treasure for a long time.

As we got back onto the bus and made our bumpy way back to the car park, I felt honoured to have seen first-hand what an amazing place White Oak is for conserving and protecting wildlife. While I commend many zoos for their conservation work, I was so pleased with how much space these animals had, giving them the freedom to behave as naturally as possible. It made me so excited to continue my internship and I looked forward to getting even more involved as the weeks progress.

IMG_9649

Fresh Inspiration

| Rebecca Gibson

Recently I’ve become a writer who doesn’t write much. I have ideas, many a day, of what to write, but somehow I never get round to making them a reality. I’m blaming this latest case of writer’s block on my new occupation, so I’ve decided to write about that. I have been accepted as a volunteer at Paradise Wildlife Park in Broxbourne, Hertfordshire. It was the longest application process for a voluntary position I’d ever experienced, but after interview, induction and trail day I was successful.

Volunteering in a small aquarium in Cumbria could not have prepared me for work in a zoo. Although far from large with only around 400 animals (in comparison with Chester Zoo’s 20,000), Paradise Park still requires plenty of hard work and for me it’s a physically demanding and challenging role. I anticipated this beforehand and should have been ready, and yet I still came home from my first day with aches in every limb, rashes on my arms from the hay and mysterious scratches from the day’s manual labour. As is expected of all volunteers, I spent most of my time with what the animals left behind (you cannot believe how heavy camel poo is) and in the July heat I worked up a significant sweat.

And the funny thing? I loved it. Three years of university has been a mental workout but not so much a physical one. My arms are little more than jointed matchsticks, and just as strong. Volunteering at a zoo will be such a great opportunity to build up some strength. There is also something immensely satisfying about scrubbing a paddock clean, even though the moment the animals are let back in they completely rearrange the fresh bedding and christen it with droppings.

If I had a pound for every time I’ve been asked “So what’s next?” since I came back from university, I could retire without having started a career. I still don’t know what I want to do or where I want to be. While I still love writing and photography, I feel a pull in a new direction – the daily grind of contributing towards a successful and high quality zoo. There is something very appealing to me about caring for wild animals in a place that values them (that’s the important bit) and sharing my passion with other people. I watched the Small Mammals keeper giving a talk as she fed the red pandas and I had an urge to join her, but my knowledge of red pandas is really quite limited. I want to study them, I want to know everything there is to know about these animals, and share that with people. And I believe I can do that by writing but also by being there among them.

I’m fully aware that becoming a zookeeper is an incredibly gruelling and challenging process. I’m also aware that my current academic background will not help me in that mission. Every keeper I’ve spoken to so far has begun by volunteering, and worked their way up the ladder. So I have joined Paradise at the very bottom, and the only way to go is up. I’m inspired by this, and know that I have to pursue it.