An blue whale’s heart is the size of a small car.

Likes

THANK YOU

Your comment will be checked and approved shortly.

SEA LIFE Manchester’s resident sea turtle, Ernie, is on a health kick!

Will YOU help protect our endangered marine wildlife?

Discover these gentle giants of the sea!

Learn all about the great white shark!

You’re leaving natgeokids.com
to visit another website!

Ask a parent or guardian to check it out first and remember to stay safe online.

You're leaving our kids' pages to visit a page for grown-ups!

Be sure to check if your parent or guardian is okay with this first.