The End of the Line

I just got back from watching “The End of the Line”, a new documentary about overfishing which premiered at the Sundance Film Festival this winter and is currently in limited release. If you have the chance to see it, I recommend it highly. Watch the trailer below:

Based on a book by British science and environmental journalist Charles Clover, and featuring interviews with leading marine ecologists (including a couple I have had the honor of meeting, Boris Worm and Steve Palumbi, and one from my soon-to-be alma mater, Ray Hilborn), it deals with the global crisis that is overfishing. The film covers a lot of ground, from Alaska to Gibraltar to Senegal to Tokyo to Peru, and captures many of the salient issues and problems: ineffective management and enforcement, illegal landings, growing worldwide demand, and an increasingly effective and over-capitalized worldwide fleet. It also goes into the problems that go along with the collapse of fish stocks: ecological phase shifts, lost income, lost protein for a hungry world, and rending of cultures who have been tied socially and ecologically to the sea for generations. Near the beginning, Jeff Hutchings of Dalhousie University in Nova Scotia describes the effect of the cod crash and fishing ban in Newfoundland. Aside from the obvious economic consequences—40,000 jobs lost overnight— the end of cod, he says, caused a certain death of the province’s collective soul.

There are plenty of shocking facts in “End of the Line” to make your soul die a little while watching it, too. Scientists recommend a quota of 15,000 lbs to just to avoid immediate collapse of Mediterranean bluefin tuna populations (10,000 to have a hope of rebuilding them), but the managers bow to fishing interests and set the limit at 30,000 lbs. Then pirate fishers go ahead and catch twice that amount, without fear of any enforcement action. Mitsubishi (yes, the Mitsubishi) currently buys 40-60% of all bluefin tuna caught worldwide, and is stockpiling frozen tuna to sell at even more astronomical prices once wild stocks are gone. Nobu, a swanky sushi restaurant group, adds a footnote to their menu to inform their diners that toro is a threatened species, but still leaves it on the menu.

The film is not perfect—my scientific side wanted more numbers, though there were probably plenty to effectively convey the information to a lay audience. It also is a bit one-sided, with lots of (very good) scientist face time, but much less with fishermen, and none at all with the real bad guys—the pirate fishers, rapacious corporate executives, irresponsible chefs, and spineless politicians. Don’t get me wrong: I believe this last group is profoundly in the wrong here. I don’t think they deserve a voice just for the sake of being “fair and balanced.” My ire as a professional cook and a marine scientist was particularly raised by Nobu Restaurant—to leave an endangered species on your menu is an insult, displaying a near-total lack of respect for your ingredients and culinary tradition. But at the same time, it is important to understand there are reasons why things occur the way they do, and they are very real.

All in all, though, “The End of the Line” is an outstanding documentary, which very effectively summarizes a huge problem, its ramifications, and solutions. The scientists are treated well, and acknowledge their uncertainties while retaining clarity on the big clear facts. The footage of the ocean and fish is beautiful and dramatic. And the film ends on a positive note, pointing out that we already know how to solve the problem of overfishing, how we as consumers and citizens can effect change, and that restoring fish to their former levels of abundance will create jobs and be a terrific and inspiring project. If you have the chance to see it, do.

2009/06/25

Scuba Cat

‘Nuff said.

2009/06/23

Filed under: Uncategorized — Tags: , — Sam @ 3:12 pm

NOAA Predicts Large Gulf of Mexico Dead Zone This Summer

NOAA announced yesterday that the “dead zone” at the outlet of the Mississippi River will likely be larger than usual this summer, due to a combination of a rainy spring with increased stream flows and an increased fertilizer load from farms in the Mississippi basin. They forecast between 7,450 and 8,456 square miles of hypoxic water—about the size of New Jersey. Watch the following video for a nice visualization.


(Video available in large size here)

Nitrogen and phosphorus are the active ingredients in synthetic fertilizer. These elements, critical to the making of proteins, DNA, and other important life materials, are typically the limiting nutrients in soils, so adding synthetic fertilizer increases crop yields.

Nitrogen and Phosphorus, however, are also limiting nutrients in large areas of the ocean. This means that when fertilizer runs of from farms and enters the ocean via rivers, it tends to fertilize phytoplankton, the single-celled algae that form the base of the oceanic food chain. Huge algal blooms result, creating a sudden food bonanza for zooplankton and fish.

Soon, however, the zooplankton and fish start pooping, the phytoplankton start dying and sinking, and the bacteria go to town decomposing it all. Decomposition uses oxygen. Since the Gulf is stratified and stable during the summer, with warm fresh Mississippi water on top of the less-warm salty Gulf water and few big storms to mix it up, there is no way for new oxygen to get mixed down into the water column. As the bacteria feast on dead phytoplankton and fish poop, they draw down on the dissolved oxygen in the water, eventually leaving it too dilute for fish and most animals to filter out with their gills. When fish get caught in the hypoxic water, they go belly-up.

Fish Kill in Narragansett Bay, RI

Fish Kill in Narragansett Bay, RI

The NOAA press release may be found here.

2009/06/19

E. O. Wilson, Lord of the Ants

Ed Wilson, is, without exaggeration, the reason I decided to become a scientist instead of something else (well, he and Richard Feynman). Towards the end of my senior year in high school, I read his book Consilience, which opened my eyes to the process of science as something more than just science class in school. He is an unbelievable writer, and it is a fantastic book.

Anyway, the other day I stumbled across a full episode (in living color, high quality, and large size) of NOVA about his life and work. In the short excerpt below, Wilson demonstrates how ants use pheremones to lead each other to food.

Click here for the full episode. (52 minutes)

2009/06/17

Filed under: Uncategorized — Tags: , , , , — Sam @ 2:39 pm

Deep-Sea Prickly Shark Briefly Displayed at Monterey Bay Aquarium

This rare deep-sea prickly shark was displayed briefly in the Monterey Bay Aquarium Wednesday morning before being released back into the ocean.

This rare deep-sea prickly shark was displayed briefly in the Monterey Bay Aquarium Wednesday morning before being released back into the ocean.

The Monterey Bay Aquarium briefly displayed a 189-lb prickly shark yesterday. As reported by the Monterey County Herald, Moss Landing Marine Labs captured the shark in the Monterey Canyon Tuesday night. It was on display for just a few hours Wednesday morning, but was released at 1:30 in the afternoon. The species is found in deep water, and the shark seemed to have trouble regulating its buoyancy in the shallow (and hence low-pressure) tank. When he began floating upside down near the top of the tank, he was quickly yanked out and released back into the ocean.

Sharks don’t have a swim bladder, the gas-filled organ that many fish use to regulate their buoyancy. Instead, they use a combination of a large, fatty liver and dynamic lift (Ă  la airplane wings) from their fins to keep from sinking. Which is actually fortunate for this shark, since fish with swim bladders don’t just get disoriented when brought to the surface: they tend to explode from the pressure change if brought up too quickly.

The prickly shark, Echinorhinus cookei, is named for it’s large denticles, the tooth-like scales that cover the skin of all sharks. These denticles are literally tooth-like, not only in shape, but in composition—they are made of dentine, which makes up the middle layer of our teeth. In fact, there is some conjecture that the first fish teeth (and therefore the first vertebrate teeth) may have evolved from dermal denticles, though this isn’t entirely clear.

The Monterey Herald story is found here.

2009/06/11

Holy $#!*, that’s a big jellyfish

Homo sapiens (left) and Nemopilema nomurai. Note the pop-off satellite tag the diver has just attached to the jellyfish.

This crazy-ass photo has been making the rounds on the internet after the publication a few days ago of a paper in the journal Trends in Ecology and Evolution on the increasing abundance of jellyfish around the world. It is of a gigantic Neompilema nomurai off the coast of northern Japan, complete with a scientist attaching a pop-off satellite tag (!) to it. These tags are usually reserved for the tuna, sharks, and big turtles of the world, not quasi-planktonic masses of drifting goo. I’m reading the paper now, and will write a more in-depth post once I’ve digested it…the ecological story is complicated, and, at least to me, utterly fascinating. Until then, though, enjoy the picture. News stories are here and here.

Filed under: Uncategorized — Tags: , , , , — Sam @ 2:11 pm

NY Times on Seafood Ethics

The New York Times the other day published two pieces, one in print and one online, about the practical and ethical questions facing seafood eaters in the present day and age (thanks, Alyssa!).

A lucky (?) bluefin tuna, who sold for over $100,000 at Tokyo's Tsukiji Fish Market.

A lucky (?) bluefin tuna, who sold for over $100,000 at Tokyo's Tsukiji Fish Market.


The first, by the great Mark Bittman, describes his changing relationship to fish over his three decades as a food writer. When he started writing, back in the 1970′s, it didn’t even occur to him—or anyone else, really—that wholesale collapses of fish stocks were possible. Since then, it has become painfully clear that those collapses can and do happen when we take more than the ocean can give. The food world’s relationship to fish has changed, too. Back then, fresh fish was still predominantly local, by necessity. In the years since, though, fish has globalized along with everything else. There have been worldwide fads (Chilean seabass, orange roughy, etc.) for fish that couldn’t support the sudden celebrity. Scarcity has led to some truly outrageous spectacles—like a single 282-lb bluefin tuna that sold for $104,700 in Tokyo at the Tsukiji Fish Market. Farmed salmon is available everywhere, and wild Alaskan salmon is sold fresh at a premium, not put in cans. Bittman describes adjusting to the new reality, and shares his personal rules of thumb for buying and eating fish today.

The second piece is a five-way blog post about the practical and ethical dilemmas facing the modern seafood eater. It includes views from Ray Hilborn, of my own alma-mater-to-be, the University of Washington, Carl Safina, whose book Song for the Blue Ocean had a significant role in convincing me to study the oceans, and Sheila Bowman, of the Monterey Bay Aquarium’s Seafood Watch program. Take-away points: educate yourself on which common food species are in trouble and which aren’t, be a picky consumer, eat low on the food chain, and be an active citizen.

Resources to inform yo’ self:
Monterey Bay Aquarium Seafood Watch
Marine Stewardship Council
Blue Ocean Institute Seafood Guide

Filed under: Uncategorized — Tags: , , , , , — Sam @ 10:56 am

Wicked Cool Phylogenetic Tree

Just found this picture on Reddit…click for full size.

I understand it is biased towards the charismatic megafauna (that is, anything bigger than a few hundred microns), but I still think it’s pretty cool.

2009/06/04

Filed under: Uncategorized — Tags: , , — Sam @ 1:35 pm

Sea Grapes Sub on Chopping Block

The Johnson Sea-Link submersible, in its element.  Note the acrylic sphere, affording the pilot and one scientist a panoramic view of the deep ocean.

The Johnson Sea-Link submersible, in its element. Note the acrylic sphere, affording the pilot and one scientist a panoramic view of the deep ocean.

The two Johnson Sea-Link submersibles and their mother ship, the R/V Seward Johnson II, are slated to be sold by their owner, the Harbor Branch Oceanographic Institution in Florida due to a lack of funds. These subs have a long history of scientific research and discovery around the world, detailed very well at Deep Sea News over the past week, including testimonials from scientists lucky enough to have made dives in the JSL. Aside from discovering the Bahamian sea grapes, these subs have had a role in thousands of deep-sea scientific studies, took the first video of the ironclad USS Monitor, and found the wreckage of the Space Shuttle Challenger.

If you felt yourself subtly enlightenened by the knowledge of fields of sea grapes rolling serenely across the abyss, please consider signing this petition to the State of Florida to help fund these submersibles and their ship.

2009/06/03

Filed under: Uncategorized — Tags: , , , , , — Sam @ 3:40 pm

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