David Shiffman

Shark Science Monday: Richard Ellis discusses a new “sharks in popular culture” museum exhibit

January 3, 2011January 3, 2011 David Shiffman 1 Comment

Science

In the latest edition of Shark Science Monday, Richard Ellis of the American Museum of Natural History discusses a new “sharks in popular culture” exhibit that he’s designing for an art museum in Florida. If you have a question for Richard, please leave it as a comment below. ~WhySharksMatter

U.S. Senate passes Shark Conservation Act, but at what cost?

December 20, 2010December 22, 2010 David Shiffman 28 Comments

Conservation, Science

We interrupt your regularly scheduled blog-cation to bring you some exciting news- today, the U.S. Senate passed the Shark Conservation Act!

The act, which passed the U.S. House of Representatives last year, closes important loopholes in current U.S. shark management policy by banning the practice of removing fins * at sea (for almost all species, more on this later). It also provides a framework for Federal officials to work with our trading partners that don’t similarly protect sharks.

It was expect to easily pass the Senate, but as we reported earlier this fall, Republican firebrand Tom Coburn blocked it and related conservation legislation. Senator Coburn’s stated objection to the bill was that it would cost too much, but the estimated cost according to GovTrack is less than $1 per American taxpayer.

How to apply for a job working with sharks

November 30, 2010December 31, 2011 David Shiffman 14 Comments

Science

A few weeks ago, I listed several common mistakes that people make when applying for a job in the field of shark science. This led to a lot of laughs and commiseration. It also led to a series of e-mails asking me how to apply for a shark science job. These e-mails came from people in various stages of their lives, all the way from children to adults who already have another career. Since I had some laughs at the expense of people who apply for jobs incorrectly, it seems only fair that I offer my advice on how to do it correctly.

Sandbar — This photo of me with a sandbar shark was taken while working for the South Carolina coastal shark survey

It is important to note that I am describing the path that worked for me. There are many other paths, though there are likely lots of similarities with mine. Some may seem pretty straightforward, but what seems obvious to some can be a life-changing revelation for others. Most are applicable to science in general and not just sharks. Similar advice can be found on this excellent website from the Love lab.

Sharks get new protections at ICCAT

November 29, 2010 David Shiffman

Conservation, Science

Last week, the International Commission for the Conservation of Atlantic Tunas met in Paris. Among other responsibilities (such as the conservation of Atlantic tunas), ICCAT sets guidelines for several shark fisheries. My friend Sonja Fordham, President of Shark Advocates International, was there representing SAI. She is optimistic about a series of new shark conservation measures that the Commission adopted.

Happy Thanksgiving from Shaaark!

November 25, 2010November 21, 2010 David Shiffman 1 Comment

Uncategorized

Happy Thanksgiving! Don’t eat too much. Comic from Shaaark ~WhySharksMatter

Grading President Obama on science and conservation

November 17, 2010 David Shiffman 6 Comments

Conservation

Earlier this week, Dr. M of Deep Sea News evaluated President Obama’s science and conservation policies and awarded him a B-. I gave President Obama a C+ overall after his first 100 days in office, noting that some things haven’t had enough time to be given a fair grade, and I think things have gotten much worse since then. I was a little shocked at how high this grade was, and I left Dr. M a snarky comment (sorry, Craig).

In the interest of fairness, I wanted to find a way to objectively grade these policies. The best that I can find is the Obameter, run by non-partisan fact checker Politifact. Basically, they record every promise that President Obama made during the campaign and since he’s become President, and they keep track of how each is progressing. Each is rated “promise kept”, “compromise” (something similar happened though not exactly what was promised), “in the works” (not done yet but actively being worked on), “stalled” (no work being done but it may happen at some point), and “promise broken”.

Submit to the Beneath the Waves Film Festival

November 17, 2010 David Shiffman 5 Comments

Popular Culture

I am excited to announce that I am now a part of the planning team for the 2nd Annual Beneath the Waves Film Festival!

This festival, which is associated with the Benthic Ecology conference, provides a unique opportunity for scientists and filmmakers to interact. Since the festival is part of a scientific conference, filmmakers will be able to get feedback from scientists, and even plan collaborations for the future. Scientists who make movies for fun will be able to ask professional filmmakers for tips.

Unlike many other film festivals, Beneath the Waves is free to enter, which makes it an ideal showcase for films by students, amateur naturalists, and starting filmmakers.

The focus is on marine/coastal/freshwater science and conservation issues. They must be shorter than 30 minutes, and we request that they be shorter than 20 minutes if at all possible. The submission deadline is January 15th, 2011.

Whether you’re a seasoned professional, a young filmmaker just getting started, or a scientist who has taken some cool video, the Beneath the Waves Festival is for you.

Shark News Roundup: the ecology of fear, curious whale sharks, and saving the manta rays

November 16, 2010November 14, 2010 David Shiffman

Conservation, Science

The shark blog-o-sphere has been busy lately. Here are some of the headlines from the world of shark science and conservation.

Chuck from Ya Like Dags has a fantastic post explaining the ecology of fear and how it relates to sharks. As it turns out, predators can have a major impact on an ecosystem just by being there- prey change their behavior in ecologically significant ways because they want to avoid being eaten. If you’re looking for scientific reasons why sharks are important to the ocean or if you’re just looking for a cool ecology story, check it out!

Al Dove of the Georgia Aquarium explains that whale sharks are curious animals that will sometimes swim over to check out humans. I’ve found that most sharks tend to avoid people, but he has a pretty convincing video.

Shark Science Monday: Sally Whatmough discusses SCUBA diver attitudes towards sharks

November 15, 2010November 15, 2010 David Shiffman

Science

In this edition of Shark Science Monday, James Cook University researcher Sally Whatmough discusses using content analysis of magazines to track how SCUBA diver attitudes towards sharks have changed over the last fifty years. If you have a question for Sally, leave it in the comments below. ~WhySharksmatter

Urea and Shark Osmoregulation

November 15, 2010January 5, 2024 David Shiffman 6 Comments

Science

One of the challenges inherent in a marine lifestyle is in maintaining an internal balance against external osmotic pressures. Cell membranes are permeable to water, and water tends to flow from areas of low ion concentration to areas of high ion concentration (which is called ‘osmosis’). Though the cell is incredibly complex, from an osmotic perspective it is basically a small sack of water with some ions in it. If cells aren’t isosmotic (i.e. containing the same concentrations of ions) to the surrounding environment, then water will flow across a cell membrane. Depending on the relative ionic concentration of the cell to the environment, water may flow either into or out of a cell. Either way, this water flow is bad for the organism and may result in cells shriveling up or bursting.