A lot of us in the beta weren't sure what benthic or pelagic was. Benthic is the deepest water, and I know the Great White Shark, the Whale Shark, and the Goblin Shark go into it. Pelagic was the open ocean. I do remember (since I was the one that figured it out :wink: ) that all of the MM2 show animals can go into Pelagic without complaining. I actually created a show tank with 8 individual tanks attached to it. :
: I wanted a show with all of the show animals, but they have to have a common biome in the show tank or they complain. Try putting an orca in desert. They aren't happy. :whistling I'm guessing the pelagic biome as a common biome will be changed in the full version, though.
FYI, from my tests during the beta, I the manatee was the most versatile. It was happy in quite a few biomes. I put it in with the hippos and flamingos quite often. I'm sure this might have changed, too.