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Arachnids include spiders, scorpions, mites and ticks. There are about 60,000 species of arachnids. Arachnids have eight legs, not six like insects. They also have an extra pair of either pincers or fangs. They do not have wings or antennae but they do have a hard exoskeleton.Arachnids have two parts to their body-the cephalothorax and the abdomen. The cephalothorax is like the head and thorax section of an insect but it is fused together.rachnids include spiders, scorpions, mites and ticks. There are about 60,000 species of arachnids. Arachnids have eight legs, not six like insects. They also have an extra pair of either pincers or fangs. They do not have wings or antennae but they do have a hard exoskeleton.
Range of Chironex fleckeri as traditionally defined, but see text. Chironex fleckeri, commonly known as the sea wasp, is a species of highly venomous box jellyfish found in coastal waters from northern Australia and New Guinea north to the Philippines and Vietnam. It has been described as the most lethal jellyfish in the world, with at least 63 known deaths in Australia from 1884 to 1996. Notorious for its sting, C. fleckeri has tentacles up to 3 m long covered with millions of cnidocytes which, on contact, release microscopic darts delivering an extremely po