How to use "shark" in a sentence

I thought it was a shark, or even the monster!

Suddenly, a large shark swam nearby

Captain Nemo fought with the shark, and there was blood in the water

Immediately, Ned Land attacked and killed the shark with his harpoon

The car is big and old, but it is a classic, and it moves along the road like a shark, the evening sun reflecting off the red paint.

Some people say that the reason his casino is called Shark Pool is because Hank looks a little like a shark