A biologist explains the surprising evolutionary math behind how the blue whale became the largest animal that has ever lived ...

Off the coast of British Columbia, dolphins lead killer whales to salmon and earn their share of lunch, a new study reveals.

Biologists discovered killer whales and dolphins working together to hunt salmon, a behavior never before documented in this ...

Scientists say dolphins and orcas have teamed up to hunt salmon off British Columbia. It’s the first time such behavior has been documented between the two mammals.

Researchers have observed killer whales teaming up with dolphins to hunt salmon and sharing the spoils for the first time, raising questions about their intelligence and social lives. In recent years, ...

Killer whales or orca (Orcinus orca) have been observed hunting with Pacific white-sided dolphins (Lagenorhynchus obliquidens ...

Samples of whale 'blows' confirmed the presence of cetacean morbillivirus, which affects both whales, dolphins and porpoises.

Porpoises in UK waters are being found with record rates of mercury in their livers, scientists have found. New research has ...

What would you do if you were a hungry Pacific white-sided dolphin, salivating at the idea of sampling some salmon but resigned to the fact that the fish is too large to capture and swallow whole? You ...

Drones have been used to successfully collect samples from the exhaled breath—or "blow"—from wild humpback, sperm and fin whales in northern Norway, hailing a new era of non-invasive health monitoring ...

The most alarming discovery from the new data is the presence of cetacean morbillivirus in the high Arctic. The virus was ...