Six gray whales have died in the San Francisco Bay area in the past week, bringing the total number of dead whales to 15 this year as authorities rush to figure out why.

Khloé Kardashian's daughter True, 7, has some explaining to do when she gets home from school. The Good American co-founder ...

A baby whale is aggressively attacked by killer whales in this intense video until a surprising and powerful rescuer intervenes. The dramatic rescue shifts the situation, highlighting the ...

The recovery of the humpback whale population suggests we may have been mistaken about their birthing grounds — tropical waters aren't the only places where they give birth. Humpback whales may not ...

Whale sharks are the biggest fish in the world, but much about them remains unknown. Like many types of sharks, they give birth to live young, though no one has witnessed a baby whale shark being born ...

With traits from both a dolphin and a whale-like species, this rare creature is unlike anything scientists expected. Its surprising origins and even more unexpected legacy continue to puzzle ...

The first baby humpback whale of the season has been spotted swimming in the Salish Sea off Washington, photos show. Big Mama ...