Ice Age 2: The Meltdown (2006)

Continuity mistake: In the first 'Ice Age' Diego isn't afraid of water (in the beginning he chases the woman and the baby through the river before she jumps off the waterfall and never shows any fear) but in this one he suddenly is. It's not like that he is just afraid of swimming because in the second movie he shows fear anytime when he touches water.

Manny: Don't listen to him, folks. Fast Tony would sell his mother's ashes for a grape.
Fast Tony: Is that an offer?

Ssiscool

Trivia: The movie contains a spoof of Saving Private Ryan, where Manny is hit by a geyser and temporarily loses his hearing. Incidentally, the German voice for Manny, Arne Elsholtz, also synchronizes Tom Hanks, who also stars in that movie, which creates an inside joke by happenstance in the German version.

Question: What species are the water creatures that Manny fights against at the end of the movie?