Slugs may look like they are fighting in videos seen online, but it is actually an intense mating ritual. Slugs can mate with anyone within their own species, as they have both male and female ...

In its native Pacific waters, the sea slug Siphopteron makisig looks tiny and delicate, like a bud of colored glass. But in reality this slug is a mirror-image mating machine, as modeled by the pair ...

The bizarre mating behavior of hermaphroditic sea slugs — which involves stabbing penile appendages and hook-like penis spines — may have hidden benefits despite its wear on the body, new research ...

The ocean is their playground — and fortunately for us, sea creatures put on amazing shows this year that were captured on camera for the world to see. There were the animals readers flipped over, ...

Giant Spanish slugs have been mating with their British counterparts to create a mutant strain of "superslugs". The Spanish molluscs are thought to have arrived in the UK in salads during the summer ...