While they may look scary the fen raft spider is harmless and plays a vital role within healthy aquatic ecosystems, the zoo said. Fen raft spiders are semi-aquatic spiders, named for their ability ...

Ten years ago, a zoo released thousands of "fist-sized" black spiders across the UK to support aquatic ecosystems. Now, ...

Slingshot spiders (Theridiosoma gemmosum) don’t just passively wait for their prey to find its way into their web. Instead, they take action. These arachnids–also called ray spiders–pull the center of ...