Discovery Kids has great videos, games, and coloring pages for kids. LINK
National Geographic Kids has a playlist of great shark videos. LINK
Here's a video about blue whales. LINK
Don't forget these websites on the left side of the screen, Britannica Encyclopedia, Pebble Go, Brain Pop, Arkive, San Diego Zoo, and Seaworld. You'll find them in the 590s, the Dewey Decimal number where information about animals can be found in the library.