Desis
Desis is a genus of sea spiders, also known as pycnogonids, that are found in marine environments around the world. These small, spindly creatures are characterized by their long legs and small, compact bodies.
Common Names
Members of the genus Desis are commonly referred to as "sea spiders," but they are not actually spiders. The term "sea spider" is used for all members of the Pycnogonida class.
Characteristics
Desis species have the following characteristics:
- Small size: They typically range from a few millimeters to a few centimeters in length.
- Long legs: Desis have four pairs of extremely long legs, which can be much longer than their bodies.
- Small bodies: The bodies of Desis species are small and compact, with a fused cephalothorax and abdomen.
- Proboscis: Desis have a proboscis, a long, tubular mouthpart used to suck fluids from prey.
- Ovipositor: Female Desis species have an ovipositor, a structure used to lay eggs.
Environments
Desis species are found in a variety of marine habitats, including:
- Intertidal zones: These species are often found among rocks and seaweed in the intertidal zone, where they can be exposed to air and water.
- Shallow waters: Desis species are also found in shallow coastal waters, often associated with sponges, corals, and other benthic organisms.
- Deep sea: Some Desis species are found in deep-sea environments, where they may be associated with hydrothermal vents or other unusual habitats.