Pycnogonida (Sea Spiders) is a class of chelicerates. There are 1354 species of Sea Spiders, in 89 genera and 14 families. This class has been around since the wenlock epoch. They are omnivores.
EOL has data for 19 attributes, including:
The environments in which many sea spiders species are known to live. Select an environment to see its sea spiders species checklist.