The arachnids are like spiders' more frightening-looking cousins. But if you think they're waiting to ambush innocent hikers, ...

Scientists have long sought to understand why sea spiders keep some of their most important organs in their legs.

This previously unknown symbiotic relationship helps keep methane—a major greenhouse gas—trapped in the ocean.

Scientists just sequenced the first sea spider genome, uncovering genetic clues to limb growth, regeneration, and ancient ...

Summer is here, and so are the bugs. Every summer, insects and arachnids alike seem to come in swarms. Spending time outside ...

In an unexpected twist, a non-venomous spider has been caught poisoning its victims by lacing its silk wrappings with vomited ...

It's not easy to look at a sea spider and see an animal so representative of its kind that it may help scientists sort out ...