* Collective nouns refer to a group of things or people as a single unit (e.g., a herd of elephants, a flock of birds).
* "Float" is a verb meaning to rest on or move on a liquid.
While crocodiles might float in water, "float" doesn't describe a group of them.
Common collective nouns for crocodiles include:
* A bask (when they are basking in the sun)
* A congregation
* A pod (though this is more commonly used for whales and dolphins)
Let me know if you have more questions!