Dark+Rock+Snail

__Dark Rock Snail __
About 1-2 years.  Plankton and sea anemone. Brown, Black. No they don't, but they have tiny serrated bits on the edges of their mouth. They look slimy, and sea through kind of like water.
 * How long do Sea Snails life?? **
 * What do Sea Snails eat?? **
 * What colours can Dark Rock Snails be?? **
 * Do Sea Snails have teeth?? **
 * What do Sea Snails look like when the're borne?? **