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 ...

This video examines five spider species with physical traits and behaviors that differ sharply from what most people expect. Footage highlights unusual body structures, movement patterns, and survival ...

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 ...