5. Tongue Eating Louse
The tongue-eating louse, is a parasitic isopod . This parasite enters fish through the gills, and then attaches itself to the fish's tongue. The female attaches to the tongue and the male attaches on the gill arches beneath and behind the female. Females are 8–29 millimetres long and 4–14 mm in maximum width. Males are approximately 7.5–15 mm long and 3–7 mm wide. The parasite severs the blood vessels in the fish's tongue, causing the tongue to fall off. It then attaches itself to the stub of what was once its tongue and becomes the fish's new tongue.
4. Sarcastic Fringehead
The sarcastic fringehead is a small but very hardy fish which has a large mouth and aggressive territorial behavior, for which it has been given its common name. When two fringeheads have a territorial battle, they wrestle by pressing their distended mouths against each other.They can be up to 30 centimetres long, elongate and slender, and are mostly scaleless with great pectoral fins and reduced pelvic fins. They tend to hide inside shells or crevices. After the female spawns under a rock or in clam burrows the male guards the eggs.They are found in the Pacific, off the coast of North America, from San Francisco, California, to central Baja California. Their depth range is from 3 to 73 metres .

3. Jewel Wasp
The emerald cockroach wasp or jewel wasp is a solitary wasp of the family Ampulicidae. It is known for its unusual reproductive behavior, which involves stinging a cockroach and using it as a host for its larvae. The wasp is mostly found in the tropical regions of South Asia, Africa and the Pacific islands. The flying wasps are more abundant in the warm seasons of the year. The wasp has a metallic blue-green body, with the thighs of the second and third pair of legs red. The female is about 22 mm long; the male is smaller and lacks a stinger.
2. The Giant Red Leech
The Kinabalu giant red leech is a large bright orange-red colored leech that is endemic to Mount Kinabalu, Borneo. It can grow to a length of over 50 cm (20 in). The Kinabalu leech is not hematophagic and feeds only on worms such as the Kinabalu giant earthworm, Pheretima darnleiensis. It lives in the damp leaf litter and soil that often accumulates in fissures. It can be found in Kinabalu Park at an elevation of 2,500 to 3,000 metres (8,200 to 9,800 ft) where the trail runs over a rocky outcrop near to the Mempening and Paka Cave shelters. It is usually seen during or after heavy downpours.
1. Sand Striker
The Bobbitt worm or sand striker is an aquatic predatory Polychaeta worm dwelling at the ocean floor. An ambush predator, the animal buries its long body into an ocean bed composed of gravel, mud, or corals, where it waits for a stimulus to one of its five antennae, attacking when it senses prey. Armed with sharp teeth, it is known to attack with such speed and ferocity that its prey is sometimes sliced in half.
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