In the animal kingdom, the creatures with the biggest hearts – relative to their size – are often the tiniest among us.

The blue whale, the largest creature on Earth, has the heart that is famously compared to the size of a small car or piano.

It’s hard to picture a creature so immense that a person could stand inside one of its arteries, yet that’s the reality of ...

WASHINGTON (Reuters) - Using a bright orange electrocardiogram machine attached with suction cups to the body of a blue whale, scientists for the first time have measured the heart rate of the world's ...

“The blue whale is the largest and loudest animal on Earth.” The blue whale is the largest animal on Earth and likely the largest animal ever to have lived. While this ocean mammoth is dubbed “blue,” ...

Blue whales don’t just hold the title for the biggest animal on the planet today. The truth is that they’re […] ...

Blue whales are fascinating animals. At 24-30 metres in length (longer than a basketball court) they are the largest creatures on Earth. They are also among the rarest. Estimates suggest that there ...

SAN DIEGO — San Diego whale watchers just returned from a trip of a lifetime. Right off the coast of Mission Bay, more than 100 Blue whales were spotted. The tour boat company, Gone Whale Watching, ...

The first-ever video of a blue whale nursing her calf has been released, along with other stunning videos of the species' intimate interactions, which were captured in 2022 by a snorkeler in the right ...