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Author: David Shiffman

Amazing fish eyes, the real cost of halibut, and protecting local species: Thursday Afternoon Dredging, December 13, 2018

Posted on December 13, 2018December 13, 2018 By David Shiffman
Uncategorized

Cuttings (short and sweet): Follow UBC’s wildlife conservation economics lab on twitter!  The Deep-Sea Fish with the Telescopic Tubular Eyes. By Craig McClain, for Deep Sea News.  How to take action to help endangered species near you. A Revelator News Podcast by John Platt.  Spoils (long reads and deep dives): Why does halibut cost so … Read More “Amazing fish eyes, the real cost of halibut, and protecting local species: Thursday Afternoon Dredging, December 13, 2018” »

Florida releases draft land-based shark fishing regulations

Posted on December 11, 2018December 13, 2018 By David Shiffman 2 Comments on Florida releases draft land-based shark fishing regulations
Uncategorized

After months of expert and public consultation, the Florida Fish and Wildlife Conservation Commission has announced the draft text of new regulations that will govern land-based shark fishing. It’s mostly very good news that directly addresses most of our concerns! 

A review of the problem
Land-based anglers in Florida (those who fish from beaches, docks, and piers) catch large numbers of threatened, protected species, handling them in needlessly cruel ways that likely result in mortality or permanent injury. Anglers are aware that what they’re doing causes harm to certain species and violates some existing regulations. Hammerhead sharks in particular are extremely physiologically vulnerable and need to be released much faster than they are currently being released or else they will very likely die. 

(Learn more: see my paper on this subject, my blog post summarizing that paper, an open letter calling for action, an op-ed I wrote about this, a review of the existing rules and how they’re regularly violated, and a years-old blog post describing one problematic incident with land-based shark fishing)

Read More “Florida releases draft land-based shark fishing regulations” »

Dive bombing birds, octopus intelligence, and a red tide update: Thursday Afternoon Dredging, December 6, 2018

Posted on December 6, 2018 By David Shiffman
Uncategorized

Cuttings (short and sweet): Follow Joe Cunningham, a marine engineer who was just elected to Congress, on twitter! The dive bombing birds of Newfoundland. By Craig McClain, for Deep Sea News How much does it cost to save a species? Less than you think! By Erik Vance, for the last word on nothing. Spoils (long … Read More “Dive bombing birds, octopus intelligence, and a red tide update: Thursday Afternoon Dredging, December 6, 2018” »

Canada announced new marine protected area standards. Here’s how science and conservation professionals reacted.

Posted on October 22, 2018 By David Shiffman
Science

Recently, the Canadian government released the Final Report of the National Advisory Panel on Marine Protected Area Standards. This report is a set of guidelines and goals for the creation of new marine protected areas in Canada, and comes as Canada is hoping to greatly increase the number and quality of MPAs. I reached out to MPA experts and environmental nonprofits to ask what they think.

Read More “Canada announced new marine protected area standards. Here’s how science and conservation professionals reacted.” »

Barndoor skates, once a textbook example of overfishing, have recovered enough to allow fishing

Posted on October 19, 2018October 19, 2018 By David Shiffman
Science

Barndoor skates were once thought to be so overfished that a highly-publicized paper from 1998 noted that they had been “driven to near extinction without anyone noticing.” One of the largest skates, barndoor skates can reach over 5 feet in wingspan, which is large enough that their diet includes small sharks like spiny dogfish; for a skate, that’s about as close as it gets to charismatic megafauna!

Recently, NOAA Fisheries announced that Barndoor skate populations off the Northeastern United States had finally recovered enough that fishing for them could resume. This move comes after a 2009 NOAA Fisheries report showed that the species had begun to recover enough that they could be removed from the species of concern list, though they remained protected at the time. “This is good news,” Mike Ruccio, a Supervisory Fishery Policy Analyst for NOAA Fisheries Greater Atlantic Regional Fisheries Office, told me. “Rebuilding overfished stocks is one of the cornerstones of the US domestic policy on fisheries.”

Read More “Barndoor skates, once a textbook example of overfishing, have recovered enough to allow fishing” »

Ancient fish farming and popular invasive species: Thursday Afternoon Dredging, October 18th 2018

Posted on October 18, 2018 By David Shiffman
Uncategorized

Cuttings (short and sweet): Follow everyone in this amazing thread of twitter wildlife biologists started by David Steen. Ancient Egyptians farmed fish thousands of years ago. By the New Arab. This is a neat story about a new archaeological study, which tells us about ancient humans’ relationship with the sea. Fun fish festivals around the … Read More “Ancient fish farming and popular invasive species: Thursday Afternoon Dredging, October 18th 2018” »

Banning Arctic fishing and protecting public beach access: Thursday Afternoon Dredging, October 4th, 2018

Posted on October 4, 2018 By David Shiffman
Uncategorized

Cuttings (short and sweet): Follow fisheries biologist Justin Rizzari on twitter! Commercial fishing banned across much of the Arctic. By Fiona Harvey, for the Guardian. Slavery with your seafood. By the Save Our Seas Foundation blog. The top fish books for kids. By Abigail Lynch, for the Fisheries Blog. Spoils (long reads and deep dives): … Read More “Banning Arctic fishing and protecting public beach access: Thursday Afternoon Dredging, October 4th, 2018” »

Dear Shark Man, are the relative sizes of sharks in the “baby shark” dance scientifically accurate?

Posted on October 3, 2018October 3, 2018 By David Shiffman
Uncategorized

Welcome to  Dear Shark Man, an advice column inspired by a ridiculous e-mail I received. You can send your questions to me via twitter (@WhySharksMatter) or e-mail (WhySharksMatter at gmail). Dear Shark Man, Are Daddy and Grandpa sharks really morphologically bigger than Mommy and Grandma sharks? Sincerely, Addicted to “Baby Shark” in Arizona Dear Addicted, Thank you … Read More “Dear Shark Man, are the relative sizes of sharks in the “baby shark” dance scientifically accurate?” »

What to do after the first fatal shark bite in Massachusetts since 1936: 3 experts respond

Posted on October 1, 2018 By David Shiffman 3 Comments on What to do after the first fatal shark bite in Massachusetts since 1936: 3 experts respond
Science

Two weeks ago, tragedy struck in New England as a boogie boarder was killed by a great white shark. Though shark bites* in general and fatal shark bites* specifically are incredibly rare (Mr. Medici was the first person killed by a great white shark in Massachusetts waters in 82 years), emotions are running high. Some Cape Cod residents are explicitly calling for a cull (targeted killing) of great white sharks.

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:

Read More “What to do after the first fatal shark bite in Massachusetts since 1936: 3 experts respond” »

Angry Canadian Crabs and Extinct Australian Sea Stars: Thursday Afternoon Dredging, September 27(8)th 2018

Posted on September 28, 2018 By David Shiffman
Uncategorized

  It’s a special Friday morning edition of Thursday Afternoon Dredging because I was traveling! Cuttings (short and sweet): Follow Nova the White Shark, a great white shark tagged in Canada by OCEARCH, on twitter! The day after Nova was tagged, I spent a day with the OCEARCH team- check out this Facebook live interview. … Read More “Angry Canadian Crabs and Extinct Australian Sea Stars: Thursday Afternoon Dredging, September 27(8)th 2018” »

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