The blue whale is the loudest animal on earth. A blue whale call can travel hundreds of miles across the water, and it is louder than an F18 jet fighter.
Baleen whales don't have ears, they hear through the vibrations picked up by the bones in their skull.
Male dolphins are called bulls, female dolphins are called cows and baby dolphins are called calves.
A dolphin's flipper is made up of five distinct bone structures, similar to that of a human hand.
Water is the most dense at 4 degrees Celsius (39.2 Fahrenheit); one liter at this temperature weighs almost exactly one Kilogram.
The jet wash of Boeing 747 taking off is strong enough to flip over a school bus, taxi cab, and a small plane.
The fur of sea otters can have more than 650,000 strands of hair per square inch. It helps to keep them insulated while swimming in cold waters.
The biggest beluga whale gathering happens every summer in Canada's Hudson Bay, near the city of Churchil. About 60,000 belugas gather to molt and reproduce.
Beluga Caviar one of the most expensive food in the world. A large tin can sells for about $35,000 US Dollars.
The biggest animal ever known to live on Earth is the Titanosaurus. It measured 140ft (40m) long and 65ft (20m) tall.
The heart of a giraffe weighs more than 10 kilograms (22lbs) and beats twice as fast as the human heart.