Surviving Murphy’s Law to study sharks

by   Profile Hannah   When 24th April 2017
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Sharks and lasers!
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Me and my dive buddy.
Hammerhead laser hannah
(c) Nikole Heath
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Lasers points on a small silky shark.
with receiver WM
Setting up our acoustic monitor.

Have you ever had one of those days when just about everything goes wrong? Mine started out breaking one of my own rules: not packing my own dive gear bag. “What do you mean you can’t find my gloves?” I asked my dive buddy, who also happens to be my husband and an experienced dive instructor, as the boat pulled away from the dock. He riffled through my dive bag and shook his head. Who forgets their dive gloves? I really didn’t want to break my other rule of always wearing gloves when diving with sharks. My hands are usually busy holding a camera or some other equipment but I still don’t like how much they resemble a chunk of dead fish sticking out the end of a black wetsuit. The dive master tossed me an extra pair of gloves. I smiled sheepishly. 

Murphy's Law states that whatever can go wrong, will go wrong and its force was strong that morning! I hit the snooze button too many times so we scrambled to get all our dive, research and photography equipment loaded. We usually pack our own gear bags, double checking with each other with mental lists, but that morning I realized the lasers on my photogrammetry rig were dead and I needed a few extra minutes to change batteries so he finished packing my bag. The lasers are an important part of the camera rig. They project points of light a specific distance apart onto the side of the shark so that we can later analyze the pictures to determine its body length and age class. This is an integral part of a long-term monitoring project run by our organization, the American Shark Conservancy, to better understand the seasonality of shark assemblages on the east coast of Florida using standardized methods. But you can’t really collect the data when your lasers are dead. And we hadn't gotten far from home when we had to turn back to get my husband's fins.

Finally, motoring towards the Palm Beach inlet and out to the offshore waters of the Atlantic Ocean, I set up my dive gear by muscle memory, as my mind spun. What depth should we start the dive? Will the currents push us west? How is the visibility? Has the bait thawed? Where I put those zip ties? I dug through my tool box to no avail and with a sigh, I pictured the new bag of zip ties sitting on the counter by the door at home, right where we left them. One thing I have learned as a field biologist is to improvise. A few twist ties and a spare shackle secured the acoustic monitor to the bait crate rope as we approached the GPS point for the first dive of the day. The volunteers got the nearly-frozen barracuda out of the cooler and of course, there's no machete. My cheeks warmed with frustration but I produced my little dive knife and started sawing the fish into even chunks. 

I wondered for a brief second if it might be better to turn around and try another day, especially when we are about to get in the water with apex predators. My stubbornness pushed that thought away, the work needed to be done. Over my shoulder, I heard an o-ring blow on a tank and a diver getting sick overboard. The captain announced that we are at the spot so the bait crate went overboard and sunk to the rope’s length of 50 feet while the buoy bobbed at the surface. The tank's o-ring was quickly replaced and everyone slipped into their gear, even the guy that was sick. I snuggled into my trusty Mares Dragon BCD, checked that my air was on and stood up, barely feeling the weight of the steel tank. Where was the data sheet? Opps, it was in my backpack so I waddled to the bow, all kitted up, dug out the clipboard and explained to the captain how to fill it out for the 5th time while the other divers jumped off the back and descended on the crate line. I grabbed my camera, found the buoy through a stress-fogged mask, and took a giant leap off the dive platform.

The chilly water slipped down my back and I adjusted my buoyancy to float just below the crate, cleared my mask, turned on my camera and lasers and took a slow breath. Like a miracle, everything was working. A shy but large great hammerhead swam at the edge of the divers and I got some decent side-on shots for analysis and was surprised by the arrival of the survey’s first male lemon sharks. I was totally focused on the animals, getting the right pictures, capturing behaviors, skin abnormalities, whether they were tagged. The stress of getting to this moment completely melted away and I remembered why I woke up at 5 am and problem-solved all morning. It is imperative to know more about these animals because of the pressures they face from things like habitat degradation and fishing. As a dusky shark swam by with three fishing hooks in her mouth, I realized we could make a real difference. Back on the boat, everyone was high-fiving and smiling because we survived Murphy's Law and accomplished our goal. And after the second dive I found my gloves in my backpack, I promised my husband I'd pack my own gear bag next time.

Written by
Profile Hannah
Date
When 24th April 2017
Where
Location 201-225 S Ocean Blvd, Palm Beach, FL 33480, USA

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COMMENTS
Elena S. on Apr 25th 2017
Hahaha what a chaotic day! Glad to read everythg worked out in the end! :)
Sharon Medd on Apr 25th 2017
Thanks to American Shark Conservancy! Keep blogging! It is interesting to hear about your day! Murphy's Law dodged me today!
Stefan Michl on Apr 24th 2017
Hi Hannah, very interesting blog and I am happy to learn that Murphy does not know only my address but obviously also others....;-) Keep on working hard for the AMERICAN SHARK CONSERVANCY and keep the husband but replace him as dive buddy if he is not improving. LOL! Can't wait to read your next blog! Br Stefan

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