Grey Reef Shark

Description:

At the Downtown Aquarium in Houston, Texas, there's a fun little exhibit in which a small train takes passengers inside of an aquarium riddled with various sharks (the train is, of course, not underwater but passes through a clear tunnel that is underneath a large shark tank.)

Habitat:

Downtown Aquarium (http://www.aquariumrestaurants.com/downt...)

Notes:

I know almost nothing about fish, and can't put a name on this one. Any help would surely be appreciated!