The injured baby whale slipped free from rescuers on Monday morning, and became stranded again after swimming upstream into shallower waters.
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New analysis of a bust attributed to Leonardo da Vinci has determined that the famed artwork wasn't da Vinci's. Rather, it was crafted from sperm whale wax in the 19th century.
Four dead gray whales have washed up in San Francisco Bay in eight days, prompting fears that the species is under threat in the area.
A juvenile humpback whale has washed up on a beach in the U.K. after first being spotted dead weeks ago.
A dead sperm whale measuring 52 feet (16 meters) long is rotting away on a beach in southern Australia.
Whale watchers in Bermer Bay, Australia witnessed two pods of killer whales trying and failing to kill a young male humpback.
An endangered whale calf has been found dead on a beach in Florida with signs it was hit by a boat. Fewer than 400 North Atlantic right whales are left on Earth.
Scientists recently animated the hazards of being a blue whale that's trying to avoid collisions with ships at sea.
A 38-foot-long (11.5 meters) whale that washed ashore in the Florida Everglades in January 2019 turns out to be a completely new species. And it's already considered endangered, scientists say.
Italian divers discovered the corpse of a large finback whale near Naples. Authorities say it could be one of the largest whales ever found in the Mediterranean.
A marine mammal medic praised locals who helped save a stranded juvenile killer whale from a beach in Scotland. Here's how they did it.
Two newborn whales were spotted swimming off the U.S. coast, giving researchers hope for a critically endangered whale species.
The critically-endangered blue whale has returned to the waters near the remote island of South Georgia near Antarctica, almost 100 years after they were nearly made extinct.
These deep-diving whales can stay submerged for more than an hour longer than once thought, and recover surprisingly quickly.
Two young beluga whales that were on show in an aquarium in Shanghai have now arrived at a seawater sanctuary off Iceland. This is the first time they've seen the sea in more than a decade.