Wild dolphins use sea sponges as tools to hunt safely, revealing how animal culture survives despite hidden sensory costs.

Dolphins are one of the most social mammals. They are highly intelligent as well, utilizing their communication skills to both cooperatively hunt and learn what is socially acceptable within a pod.

When researchers from the University of British Columbia set out to film the solitary hunting habits of Northern resident killer whales, they expected to see quiet and solitary predators at work.

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. WASHINGTON (AP) — Some dolphins in Australia ...