HARAKIRI !!! The tale of the suicidal invertibrates

[whatcaneyedo]

What you've experienced with the snails is extremely common. If you diligently research all of your purchases before you make them you will avoid a lot of surprises like that. You can also expect that your crabs will occasionally kill your snails for their meat and for their shells from time to time as well.

The Grazing Snails, Part I - Turbo, Trochus, Astraea, and Kin
http://reefkeeping.com/issues/2004-05/rs/index.php

[Wingin It]

Sometimes my hermits pull out other hermits. Then I find legs and stuff floating...ughh...annoying.

[SAMSHUNG]

Is there anything I can do to mitigate them going cannibal? Keeping them well fed and providing extra homes perhaps?

[Wingin It]

i've done both, given extra shells and make sure they get enough to eat, but I think they do it for sport or some kind of hermit crab ego thing.

[naesco]

Originally Posted by SAMSHUNG

Is there anything I can do to mitigate them going cannibal? Keeping them well fed and providing extra homes perhaps?

Yes, return them Hermits are predators of all the neat little critters that feed your coral and small fish.
Keep one cause they are cool to watch.

Run if a LFS asks you about 'clean up crew'