Search results for Whale

Plants & Animals Apr 8, 2024

Toothed whale echolocation organs evolved from jaw muscles, new research suggests

Dolphins and whales use sound to communicate, navigate and hunt. New research suggests that the collections of fatty tissue that enable toothed whales to do so may have evolved from their skull muscles and bone marrow.

Plants & Animals Apr 7, 2024

Scientists say these killer whales are distinct species: It could save them

More than 150 years ago, a San Francisco whaler noticed something about killer whales that scientists may be about to formally recognize—at least in name.

Plants & Animals Apr 4, 2024

Amphibians use scream inaudible to humans for self-defense against predators, study suggests

A study reported in the journal acta ethologica has recorded the use of ultrasound by amphibians for the first time in South America. It also describes the first documented case of the use of ultrasound for defense against ...

Plants & Animals Apr 4, 2024

Salmon populations are struggling, bringing economic woes for California's fishing fleet

On the docks at Pillar Point Harbor, fishing crews have been arriving with loads of freshly caught Dungeness crab.

Plants & Animals Apr 4, 2024

Adult fish struggle to bounce back in marine protected areas, study finds

Age matters when determining how to protect life in the ocean; every population needs a strong cohort of adults to produce the next generation. But many marine protected areas (MPAs) are falling short of their most basic ...

Ecology Apr 4, 2024

An orca calf stranded in a Canadian lagoon will be airlifted out to reunite with pod, rescuers say

Plans are underway by to airlift a stranded killer whale calf out of a remote tidal lagoon off northern Vancouver Island in an effort to reunite the young orca with its extended family, Canadian authorities said Wednesday.

Plants & Animals Apr 3, 2024

Extinction risk to southern resident orcas accelerating as researchers raise alarm

Orca scientist Rob Williams always thought that conservation was a knowledge problem, that once science showed why a species was declining, people would fix it.

Plants & Animals Mar 29, 2024

Dungeness crab season in San Francisco Bay Area, Central Coast will come to an early end

The already-shortened 2023–2024 Dungeness crab season in the San Francisco Bay Area and central California will come to an end early, in slightly more than a week.

Plants & Animals Mar 28, 2024

Study suggests starvation decimated gray whales off the Pacific Coast: Can the giants ever recover?

When large numbers of gray whales began washing up along North America's Pacific Coast nearly six years ago, marine scientists could only speculate on the reason: Was it disease? Ocean pollution? Increasing ship collisions?

Plants & Animals Mar 28, 2024

New research reveals full diversity of killer whales as two species come into view on Pacific Coast

Scientists have resolved one of the outstanding questions about one of the world's most recognizable creatures, identifying two well-known killer whales in the North Pacific Ocean as separate species. The research is published ...

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