Fact 1: Along tail can be used to move through water by an animal.

Fact 2: Crocodiles swim mostly with their tails.

Given the two facts above, answer the question "What can move through water?" with the following options: 
- pebbles
 - crocodiles
 - leeches
 - stones
 - rocks
 - Jellyfish
 - mussels
 - Nematoda


 

  crocodiles       