EDFish

Selected tag(s): swordfish

The oceans’ twilight zone? More important than you can imagine!

By Douglas Rader, Jamie Collins and Edith Widder, CEO & Senior Scientist, Ocean Research & Conservation Association

People of a certain age will recall being mesmerized—perhaps terrified!—by a television series called “The Twilight Zone,” which ran 156 episodes from 1959 to 1964. The show, which focused on people’s experiences at the edge of reality, is among the best loved and highest rated television productions of all time. Today, the edge of the unknown exists closer than you many think—in the sea, at the wonderful and strange, just-dark middle depths, where light fades and strange creatures lurk. Read More »

Posted in International, Policy, Science/Research / Also tagged , , , , , , , , , , | Comments are closed

How will climate change affect the bigger fishes in the sea?

By Katie Westfall and Kristin Kleisner

Tunas, sharks, billfishes and swordfish are wide-ranging species that can respond rapidly to environmental changes. Many within this group are top predators and can move across ocean basins and between shallow and deep waters in response to oceanic conditions. For these reasons, some of these species may serve as “climate sentinels,” or animals that can offer important insights into how a changing climate is affecting ocean processes and marine life. Read More »

Posted in Gulf of Mexico, International, Mid-Atlantic / Also tagged , , , , , , , , , , | Comments are closed

Protecting imperiled ocean travelers

Photo: Noel Lopez-Fernandez

Photo: Noel Lopez-Fernandez

By: Katie Westfall & Melissa Mahoney

Across the globe, populations of many highly migratory species of fish, turtles and marine mammals have hit dangerously low levels. For example, Western Pacific leatherbacks have declined more than 80 percent, and their Eastern Pacific counterparts have declined by more than 97 percent. Many of these species play vital roles in maintaining balanced ocean ecosystems full of diversity and life. As we work to reverse these declines, environmentalists have to ensure that everything we do has the greatest positive impact. This means that we’ll need smart management at home and solutions that protect highly migratory species wherever they roam.

New research suggests that well-intentioned U.S. regulations designed to help species like sharks and sea turtles may actually create a net harm to imperiled sea life.

This unintentional negative dynamic can occur when a country, like the United States, unilaterally adopts a regulation to protect an imperiled species such as sea turtles or sharks caught as bycatch. If the regulation leads to decreased fishing domestically and shifts fishing internationally to countries where bycatch rates are higher, the net result can be a higher number of bycatch deaths for the very species the regulation intended to protect. This phenomenon has been called the “transfer effect.” Read More »

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