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.

The study, "Variation in thermal tolerance plasticity and the costs of heat exposure in the estuarine sea hare, Phyllaplysia ... reveals that this small sea slug is both remarkably heat-tolerant ...

Second, sea hares from Washington State to California's Morro Bay are part of a single, well-mixed genetic population, defying expectations about their limited dispersal ability. Despite having no ...