Bloodthirsty shrimp

Bloodthirsty Shrimp are giant sea monsters living on the planet Earth in the year 351120. They have two red eyes, eight brown arms and claws, crustacean skin, and other characteristics shared with the Decapodians. Bloodthirsty Shrimp have their bodies attached to a Merfolk. One of them almost ate Professor Hubert J. Farnsworth, Philip J. Fry and Bender Bending Rodríguez when they made a stop in its time during their forward time travel. They are not a member of the Democratic Order of Planets, which likely doesn't exist in the 3512th century. These creatures are remembered in the song In the Year 252525.