Ludroth

The Water Minions are small to medium sized sea serpents that are a completely new species of monster. Along with Ragiakurusu, these creatures represent the three species of sea serpents. There is a small species seen in the beginning of the MH3 Trailer and another, larger species that is seen in screenshots and in one of the underwater scene of the MH3 trailer (Also seen in some of the gameplay videos.). Very little is known about the latter, except that they have two very large dorsal fins running down most of their body and that they are apparently very docile (Like Herbivores.) and only attack when threatened. They are to be featured in Monster Hunter 3. One minion is also a shark.

Trivia

 * Their appearance suggests that they are loosely base off a Nothosaur.