Sea Spiders are called Pycnogonids.

Sea spiders are very mysterious creatures. They have piercing jaws that are well suited to their diet of Bryozoans. The stomach extends into their legs. Males have hooks on their legs and can be seen carrying egg balls around. To locate Pycnogonids always inspect Bryozoan colonies or sponges on night dives. Pycno means small and Gonids refers to the sex organs or eggs. Sea Spiders is a poor name. Land spiders are air breathing Arachnids with 8 legs, a head and chest fused together and an abdomen with silk glands. Pycnogonids are aquatic, can have 8 or more legs, have a different body structure and reproductive process.

 

Sea Spider
Sea Spider gold Sea Spider thin