In the 1960s, neuroscientist Eric Kandel began a series of experiments on the California brown sea hare, a species of sea slug that looks as though it were dropped into the ocean from outer space.

California researchers this week announced that it is a new species of sea slug. The Monterey Bay Aquarium Research Institute posted video online of the new sea slug floating gently in the depths.

California is about to bestow an honor on a type of mollusk that resembles a fruit and a crustacean often served with a side of butter. Possibly. The banana slug and the Dungeness crab may become ...