giant sea spider

Unlike most sea spiders, which have a leg-span of less than 2.5 cm, the giant sea spider (Colossendeis australis) has a huge leg-span of about 25 cm. It has a large proboscis through which it sucks its food, but its tiny body is so small that the sex organs and parts of its digestive system are situated in the tops of the legs. Sea spiders are somewhat unusual among arthropods in that they exhibit parental care, the males having a modified pair of legs to carry the eggs until they hatch.

Photo © Claudia Arango