Shells of worm snails, also known as vermetids, from a Waialua beach. Some people call these mollusks tube snails, but since the reef also hosts abundant species of tube worms, this name is confusing.

Adam Elliot’s animated feature “Memoir of a Snail” from IFC Films shows off sibling love with a snail’s quirky, whimsical nature in the first trailer ahead of its North American premiere at the ...