Sea spiders are similar to land spiders but have virtually no abdomen. Their metabolic functions and organs are contained in their extremities and they also have no respiratory system. The oxygen they require is carried to the different parts of the sea spider by diffusion. Eyestalks protrude from the body of the sea spider and aid in movement and feeding on prey. The sea spider's digestive tract extends into each of the legs of the spider. The muscles on the legs of the spider are single cells with each attached to connective tissue. The organism has either six or eight long segmented legs. Their main body also has a proboscis that extends out from the main body. Most of these species use the proboscis to feed. The proboscis is thrust into the body of a soft-bodied invertebrate and sucks out the nutrients. The male carries out its method of reproduction after a brief courtship and external fertilization of the eggs. The fertile eggs immediately attach to the legs of the father until they hatch. The male will care for the embryos until they reach the juvenile stage and can care for themselves. At that point, they have developed two or three pairs of legs that can use to walk on and then they leave and pursue life on their own. The preferred food sources of each particular spider are those that it fed upon just before the juvenile stage. ++++++++++++++ A Super Macro shot of a shrimp head (No Cropping) from Anilao Batangas, Philippines. ++++++++++++++ Often leaping right out of the water with a wingspan of more than 20 feet, the Giant Manta Ray (Manta Birostris) is known to be a graceful swimmer with acrobatic skills. Also known as the Devil Ray, its horn looking features act as passages for consuming plankton and other small organisms. But for all its size and skill, mantas are completely harmless. Raja Ampat Indonesia.