Blog Tags: Longlines
In honor of Shark Week, Oceana is taking a look at one of the biggest issues facing sharks today: bycatch, or the unintentional catch of non-target fish and other marine life. It occurs in multiple fishing gear types and occurs in fisheries throughout the world. Fortunately, this is a reversible situation that can be overcome with collaboration between fishermen and policy makers.
One green sea turtle may soon become one of the most well-known sea turtles around the world, after he clued researchers into a possible migratory “superhighway” between Costa Rica and the Galapagos last month.
Following Oceana’s newly released report on the harmful impacts of illegal fishing, one of the questions that I as Oceana's Northeast representative was asked most often was, “Where is this happening?” The short answer: Illegal fishing happens everywhere, from the most distant waters near Antarctica to just off the U.S. coast.
After a victory for Pacific sea turtles last week, here’s some not so good news.
Two endangered species of sea turtle are facing an increased threat after the National Marine Fisheries Service (NMFS) approved a plan allowing a Hawaii-based shallow-set longline swordfish fishery to catch more endangered sea turtles while hunting for swordfish in the North Pacific Ocean.
Currently, regulations allow a capture, or “take,” of 16 endangered leatherback sea turtles and 17 endangered loggerhead sea turtles per fishery per year. If and when turtle catch limits are reached, the fishery must close for the year. However, the new rule, set to take effect November 5, will allow a 62 percent increase in allowable takes of leatherbacks for a total of 26 per year, and a 100 percent increase in the catch of loggerheads for a total of 34 per year.
The timing for this approval is particularly paradoxical, as NMFS upgraded the status of the Pacific loggerhead sea turtle from “threatened” to “endangered” little more than a year ago, and designated almost 42,000 square miles of ocean waters off the coasts of California, Oregon, and Washington as critical habitat for leatherback sea turtles earlier this year. The leatherback sea turtle was also recently designated as the official state marine reptile of California.
Ben Enticknap, Pacific Project Manager for Oceana, said:
“This decision is outrageous. On the one hand the federal government acknowledges Pacific leatherback and loggerhead sea turtles are endangered and that more needs to be done to protect them. At the same time they say it is okay for U.S. fishermen to kill more of them.”
We agree, it’s outrageous – and our campaigners are examining the available options in a plan to stop these measures before they take effect on November 5. We’ll keep you posted!
Since a lot of what happens in the oceans is hidden from view, the issues we discuss here on the blog can often be abstract and hard to visualize.
That’s why starting today, I’ll be featuring an ocean infographic by artist Don Foley each week. These infographics also appear in Oceana board member Ted Danson’s book, “Oceana: Our Endangered Oceans and What We Can Do to Save Them.”
I thought I’d start with one of the most mysterious players in the ocean: fishing gear. I don’t know about you, but I’ve never actually seen any of these in real life (have you?), so I find this infographic quite helpful:
Dredges catch scallops and fish by dragging across the seafloor. They can crush corals, catch sea turtles, and disturb all kinds of seafloor life.
Purse seine nets catch schooling fish like tuna by encircling the school with a wall of netting. They can capture dolphins and other natural predators feeding on the school.
Trawl nets catch shrimp, cod, haddock, and other fish. Bottom trawls drag weighted nets across the seafloor, crushing corals or any other marine life in their path. Bottom trawls also discard more unwanted fish than almost any other form of fishing and are extremely destructive. Midwater trawls drag large nets through the water to catch pollock and other schooling fish, and when their nets are full, they may also drag on the bottom.
Gillnets are one of the most widely used methods in the world for catching salmon and sharks. When not closely tended, gillnets can entangle and drown sea turtles, seabirds, and marine mammals. Some gillnets also snag large numbers of juvenile fish, which contributes to overfishing.
Read more about fishing weaponry and see a larger version of this infographic, and come back next week to ogle more ocean visuals!
The study found that 85,000 sea turtles were reported caught by commercial fisheries worldwide over the last 20 years, but the scientists estimate that the actual number is two orders of magnitude higher than that -- in the millions.
The 85,000 figure only accounts for sea turtle bycatch that was reported, but the actual number of turtles caught is significantly higher because typically less than 1% of fleets have fishing observed and many small scale fisheries have no observer coverage at all.
The study looked at sea turtles caught by gillnets, longlines and trawls, three of the most commonly used fishing gear types. The bottom line here is that the number of sea turtles caught as bycatch is enormous. Without additional bycatch reduction and better enforcement of established protections, many sea turtle populations may go extinct.
- Sharks and Rays Gain International Protection under CITES Listing Posted Sun, September 14, 2014
- Photos: Oceana Launches Expedition to El Hierro Island and Atlantic Seamounts Posted Thu, September 18, 2014
- High Level of Seafood Fraud Found in Denmark Posted Sat, September 20, 2014
- Ocean Roundup: Shark-Eating Dinosaur Fossils Discovered, Germany Paving Way for Cheaper Wind Energy, and More Posted Mon, September 15, 2014
- Oceana Magazine: Arctic Assets Posted Thu, September 18, 2014