The matte-black slug can grow up to 3.5 inches long and stands out from many native species, which typically have lighter markings or colorful spots if they are dark in color. Ashley Morgan-Olvera ...

Sam Ballard never did anything wrong, if you ask family and friends. The teenager from Sydney’s upper north shore was having a laugh and some red wine with mates in the backyard, “trying to act like ...

Unlike their shelled relatives, which can tuck in and hide from predators and environmental factors, sea slugs are just out ...

A bright green sea slug along America’s coast feeds on sunlight, not food, borrowing plant power to survive months unfed, ...

Melissa Breyer was Treehugger’s senior editorial director before moving to Martha Stewart. Her writing and photography have been featured in The New York Times, The Guardian, National Geographic, ...

A newly discovered sea slug adds that special something to mating: simultaneous forehead piercing. Found on Australia’s Great Barrier Reef, the new species of hermaphroditic sea slug­­ — bright yellow ...

This week, a friend sent me our horoscope—we’re both Gemini—from Seven Days, a beloved Vermont weekly, because, improbably, it was about the sea slug I’d been telling her about just days before. “The ...