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Biology Facts

1-The sailfish can swim at the speed of 109 km/h, making it the fastest swimmer.

2-Oysters change from male to female gender several times during their lifespan.

3-The Sea Horse is the slowest fish, drifting at approximately 0.016 km/h.

4-The heaviest fish ever caught was the Ocean Sunfish. It weighed 4,928 lbs.

5-Porpoises and dolphins communicate with each other by squeaking, growling, moaning, and whistling. Porpoises and dolphins are mammals.

6-A starfish doesn’t have a brain

7-A slug has four noses.

8-The stonefish, which lives off the coast of Australia, is the most poisoous fish in the world.

9-Fish have gel-slime on their bodies that protects them from parasites.

10-Minnows have teeth located on a bone in their throat.

11-Killer Whales are the only sea animal that outranks the Tiger Shark as top predator of the sea.

12-Animals with some of the longest lives are the Marion’s tortoise (152 years), the fin whale (116 years) and the deep-sea clam (100 years).

13-Starfish have eight eyes – one at the end of each leg.

14-Pearls are found in oysters. The largest pearl ever found was 620 carats.

15-Frogs have an ear drum on the outside of their head.

16-The hippopotamus gives birth under water and nurses its young in the river as well, though the young hippos do come up periodically for air.

17-The age of a fish is known by looking at its scales. They have growth rings just like trees. These are called circuli. Clusters of them are called annuli. Each annuli show one year.

18-Fish swimming at depths of 15,000 feet (almost 3 miles down!) can withstand a pressure of 7,000 pounds per square inch.

19-Scallops swim with jet-propelled speed by clapping its shell open and shut.

20-A jellyfish is 95% water.

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