Though sea spiders have thrived for millions of years in a variety of marine conditions—in cold Antarctic waters, on deep seafloors and along rocky, estuarine shorelines—it is correct to call them ...

The knotty sea spider, Pycnogonum litorale, is not actually a spider, but it does represent a significant early branch in the genetic family tree that includes spiders, as well as scorpions, ticks and ...

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 the evolution of almost everything with eight legs. But that's the potential ...