Animal that looks like a spider living in different depths in the sea. The most distinguishing characteristics other than their home is a big foot (when compared to the body). They do not have the respiratory system, but uses diffusion to survive. The largest of this kind is Colossendeis colossea species.
2. The whip scorpion
This scary arachnids have pedipalus (clamp) large and "whip" on the edge of their abdomen. Even more frightening is this animal can spray a variety of chemicals from their stomachs, including formic acid (formic acid) (CH2O2), a mixture of chlorine and acetic acid (C2H4O2) and oktanoic acid (C8H16O2), depending on their species. Their last spray smells like vinegar, which is why they are also called "Vinegarroons".
3. Synodontis Nigriventris
As the name suggests, fish from Africa is often found swimming in the reverse situation. It is estimated they do this so that they can reach food on the water surface, such as insect eggs. Their body color is also upside down, unlike most fish, their stomachs are much darker than the top of their bodies. This is useful for camouflage against predators at the top. They are a popular pet fish.
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