Okay I just checked out Unkoman's awesome Human Killer Whale here....
http://freedomreborn.net/archive/index.php?topic=41223.90
...and it just came to me, that using that mesh, and maybe alittle modding these guys can be made!
1. King Shark
http://www.angelfire.com/mi2/dcuniverse/kingshark.html
2. The Shark
http://www.angelfire.com/mi2/dcuniverse/shark.html
3. Orca
http://www.angelfire.com/mi2/dcuniverse/orca.html