Crabs have legs five times longer than their bodies

Arrow crabs catch attention with 20cm-long legs - five times their body length.

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The Blue Reef Marine Park in Newquay (UK) has welcomed a very special new resident, an arrow crab . This crab has a body length of only 4cm, but their legs are up to 20cm long.

The arrowhead crab has 20cm long legs - 5 times the body.

The first scientists discovered this crab has called them arrowheads because their heads are pointed and their eyes protruding out look very much like the heads of an arrow.

'With long legs, pointed heads and protruding eyes, the arrow crabs look very funny. However, these characteristics help them adapt to the underwater environment. They are considered the most perfectly evolved crustaceans to adapt to natural habitats , 'said Paul Strachan, a spokesman for Blue Reef Marine Park, on the Daily Mail.

Arrow crabs often live in coral reefs about 10 meters above the water in the West Atlantic Ocean, from the US to Brazil and across the Caribbean. Their food is mainly the scavengers of marine, algae and ephemeral species.

Their bodies also have a variety of colors, including yellow or cream with brown, black, or iridescent spots, . to adapt to their surroundings. Their legs are usually red or yellow, while they are blue or purple.

Arrow crabs carry eggs under the abdomen until the eggs hatch and the larvae after hatching will swim along the water. Later, these larvae will return to coral reefs and undergo a series of pre-mature hair loss processes.