My Postdoctoral research has focused on understanding the causes and consequences of public misunderstanding about shark fisheries management. While scientists overwhelmingly support sustainable fisheries management as a solution to shark overfishing, many concerned citizens and conservation activists prefer total bans on all shark fishing and trade. Some go so far as to (wrongly) claim that sustainable shark fisheries cannot exist even in theory and do not exist in practice anywhere in the world, and that bans are the only possible solution.
There’s an important piece of data that very rarely makes it into these discussions. Amidst the ongoing discussions about whether or not sustainable shark fisheries are even possible, one right in my backyard became the first shark fishery anywhere in the world to be certified as sustainable by the Marine Stewardship Council.
However, a few years after BC’s spiny dogfish fishery got certified, the certification was quietly withdrawn. I couldn’t find any information in the MSC reports, or in associated scientific literature or government reports, that explained what happened to this fishery, which was thriving until recently. No scientists, managers, or conservation advocates who I asked about this knew exactly what happened to BC’s spiny dogfish fishery.
You can buy a 5-lb bag of polymetallic nodules from the Clarion-Clipperton Fracture Zone on Amazon, right now.
Depending on your vantage point and how long you’ve participated
in the deep-sea mining community, this will either come as a huge surprise or be
completely unexceptional. Prior to the formation of the International Seabed
Authority, there were no international rules governing the extraction of
seafloor resources from the high seas. Multiple nations as well as private companies
were engaged in exploration to assess the economic viability of extracting
polymetallic nodules and tons of material was recovery from the seafloor for
research and analysis. Some of that material almost certainly passed into
The Niskin bottle, a seemingly simple device designed to take water samples at discrete depths, is one of the most important tools of oceanography. These precision instruments allow us to bring ocean water back to the surface to study its chemical composition, quality, and biologic constituency. If you want to know how much plastic is circulating in the deep sea, you need a Niskin bottle. If you need to measure chemical-rich plumes in minute detail, you need a Niskin bottle. If you want to use environmental DNA analyses to identify the organisms living in a region of the big blue sea, you need a Niskin bottle.
Niskin bottles are neither cheap nor particularly easy to use. A commercial rosette requires a winch to launch and recover, necessitating both a vessel and a crew to deploy. For informal, unaffiliated, or unfunded researchers, as well as citizen scientists or any researcher working on a tight budget, getting high-quality, discrete water samples is an ongoing challenge.
The Rio Grande Rise is an almost completely unstudied,
geologically intriguing, ecologically mysterious, potential lost continent in
the deep south Atlantic. And it also hosts dense cobalt-rich crusts.
The Rio Grande Rise is a region of deep-ocean seamounts
roughly the area of Iceland in the southwestern Atlantic. It lies west of the
Mid-Atlantic Ridge off the coast of South America and near Brazil’s island
territories. As the largest oceanic feature on the South American plate, it straddles
two microplates. And yet, like much of the southern Atlantic deep sea, it is
relatively under sampled.
Almost nothing is known about the ecology or biodiversity of
the Rio Grande Rise.
Hagfish. You love them. I love them. Of all the fish in all the seas, none are more magnificent than the hagfish. Across the world, children celebrate the hagfish by making slime from Elmer’s glue, their own mucous, or just, like, something. Seriously, how is is that toddler hands are always coated in some strange, unidentifiable slime?
2018 was a big year in hagfish science. Below are just a few of my favorite studies.
A hagfish in the high Antarctic? Hagfish have previously never been observed in the shallow waters around Antarctic, but a photograph from 1988 was determined this year to be a hagfish feeding on a large pile of clam sperm in shallow water. Neat!
Incidentally, the reason the photo languished for so long is that it was originally though to be a Nemertean. Because Antarctic Nemertean worms are huge and horrifying.
Such a cull would be devastating for a recovering but still protected shark species, has been shown not to effectively reduce shark bites, and is opposed by shark experts around the world, but what, if anything, should local governments do instead? I’ve written in the past about alternatives to lethal shark control here and here, but not every solution is applicable for every location; local oceanographic conditions vary, as well as local laws and cultural norms. I reached out to three experts to ask what, if anything, they think should be done here. Here’s what they had to say:
The 30th anniversary of Shark Week was the biggest ever, with 22 episodes. It was, as usual, a bit of a mixed bag, though nothing was anywhere near as bad as the bad old days of Megalodon, and there was some pretty good stuff. As has become tradition here at Southern Fried Science, here are some overall thoughts on this year’s Shark Week, as well as reviews for each episode (not counting the clip shows, which I didn’t watch- even I have limits).
I heard more references to shark conservation this year, though almost exclusively offhand references to how the Bahamas is a Shark Sanctuary (there was one mention of shark fin trade bans in the Shark Tank show).
There were more women scientists and non-white scientists than I can remember, but still some major issues with diversity of scientists. (The white male scientists were still treated differently, including being given their full titles, and in one case a white male with a Masters was called Dr. while a woman with a Ph.D. was not called Dr.).
22 shows is too many shows. I may be the only one in the world who actually tried to watch them all and I had to skip the clip shows because even I have limits.
Rather than organizing episode reviews in chronological order or air date, this year I’m going to organize them by theme.
Life has unbelievably complex and diverse strategies to ensure survival. Organisms are able to go dormant during unfavorable conditions, and resuscitate once the environment becomes ideal again. This can play out over relatively short time periods such as when animals hibernate, or over longer periods where organisms can go into stasis, e.g. reviving bacteria from 250 million year old salt crystals.
Researchers in Russia recently thawed out permafrost sediment frozen for the past 42,000 years, and revealed once frozen and now living nematodes. Yes you heard that correctly, worms birthed and subsequently frozen during the Pleistocene (42,000 years earlier) were just resurrected in the 21st century. Frankenstein, eat your heart out.
Eophasma jurasicum, a fossilized nematode. (Photo credit: Ghedoghedo)