Pycnogonida (Sea Spiders) is a class of Chelicerata. There are 1344 species of Sea Spiders, in 79 genera and 11 families. This class has been around since the wenlock epoch. They are carnivores.
EOL has data for 18 attributes, including:
The environments in which many sea spiders species are known to live. Select an environment to see its sea spiders species checklist.