Saving Seafood

ALASKA: Alaska salmon troll fleet under the gun over chinooks and killer whales

February 1, 2023 — Alaska’s Southeast salmon troll fishery is again in the crosshairs with the latest round of legal action threatening the loss of its key chinook fisheries.

In December, a western Washington district court released recommendations to suspend fishing under the Incidental Take Statement, a provision within the Pacific Salmon Treaty that allows Alaska trollers to take wild chinooks throughout the year.

The legal battle began in 2020 with a lawsuit filed by the Washington-based Wild Fish Conservancy that challenges the biological rationale in setting allocations of Pacific Salmon Treaty chinooks that Southeast trollers catch.

The premise of the case is that when the National Marine Fisheries Service rendered its biological opinion in the formation of the treaty, it did not consider a portion of the commingling stocks as forage fish for the population of 73 killer whales in Puget Sound. The WFC suit rides on the contention that the agency acted out of compliance with the Endangered Species Act.

In a 2021 ruling the same court agreed that NMFS was out of compliance. Since then, the agency has been working on language that it hopes will satisfy mandates within the ESA. But the question remains whether the Alaska troll fishery will be able to operate or not.

Read the full article at the National Fisherman

Status Review Finds Endangered Killer Whales Still Face High Risk of Extinction

January 20, 2022 — Alright, stop the presses, folks. What is a 5-year review? What’s a distinct population segment? How and why are the beloved Southern Resident killer whales (SRKWs) still in danger of becoming extinct? Let’s break this down.

What Does This All Mean?

First, let’s explore the factors we consider for a species to be placed on the Endangered Species list:

  • Present or threatened destruction, modification, or curtailment of its habitat or range
  • Over-utilization of the species for commercial, recreational, scientific, or educational purposes
  • Disease or predation
  • Inadequacy of existing regulatory mechanisms
  • Other natural or human-caused factors affecting its continued existence

SRKW were listed as endangered in 2005. The main threats being prey availability, pollution and contaminants, effects from vessels and sound, as well as small population size and vulnerability to oil spills. The Endangered Species Act requires a review of species listed under the Act every 5 years. Why? This ensures that the listed species retain an appropriate level of protection under federal law.

The SRKW are also what is called a “distinct population segment” of a tentative subspecies of North Pacific resident killer whales. Killer whales are found in every ocean and are all still known by the same species name, Orcinus orca. The SRKW are “distinct” based on their genetics, geographic range, and behavioral and cultural diversity compared to other resident orca whales in the North Pacific. They are the only resident killer whales that use coastal waters as far south as California. While many other orcas are doing well, the Southern Residents are not.

Read the full story at NOAA Fisheries

When Ice Melts: Tipping the Scales in the Predator/Prey Arms Race in Antarctica

February 1, 2016 — A man is poised with a crossbow on an inflatable Zodiac in the Weddell Sea, impressively keeping his balance as the tiny boat pitches in the Antarctic swells. He’s aiming at a killer whale that’s surfaced to breathe. Unlike his predecessors from long ago, he’s not trying to kill the whale. Rather, his crossbow is equipped with a satellite tracking device that he is attempting to attach to the whale’s dorsal fin.

The man is Dr. John Durban, and along with his partners Dr. Holly Fearnbach and Bob Pitman with the U.S. National Marine Fisheries Service, he is conducting research to understand the role of killer whales as top predators in the changing Antarctic ecosystem. With a grant from the Lindblad Expeditions-National Geographic (LEX-NG) Fund, this team of scientists makes annual expeditions to Antarctica to carry out their research.

While Antarctica tends to get a bad rap as a frozen wasteland, it’s actually a dazzling wilderness of ice and stone. Offshore, the Southern Ocean is chock full of marine life. Despite the frigid water temperatures—somewhere in the vicinity of 30℉…brrr!—an abundance of marine creatures exist as part of a robust food web.

At the bottom (of the web, not the ocean), is krill. This mini crustacean smaller than your pinky finger is the foundation of the Antarctic food chain. Species from minke whales to small fish, squid, and penguins dine on this shrimp-like creature. Bigger fish and seals eat the fish, squid, and penguins that eat the krill. And at the top of the web is the killer whale: a cunning and efficient predator.

Read the full story at National Geographic