The yellowline arrow crab, also known as the yellowline arrow crab, gets its name from the characteristic shape of its body, which is broad at the base and tapers to a point. The yellowline arrow crab belongs to the phylum Arthropoda and more specifically to the crustaceans. It generally measures around 2 inches , but with its long, thin legs extended, its total span can reach up to 4 inches.

The yellowline arrow crab has 4 pairs of long, thin legs as well as one pair of long claws, the tips of which are blue in color. Because of its long and slender legs, the yellowline arrow crab actually looks more like a spider !

The yellowline arrow crab is found in the western Atlantic ocean, including Florida, the Bahamas, and the Caribbean such as Guadeloupe. It is also present in the tropical waters of the Indian ocean.

The yellowline arrow crab is found from the surface down to depths of around 66 ft. The yellowline arrow crab inhabits crevices in coral reefs and rocky bottoms.

The yellowline arrow crab is mainly a detritivorous and opportunistic animal, playing an important role in cleaning coral reefs. It feeds on organic debris, dead animals, and decomposing matter found on the seafloor.

However, its diet is not limited to this: it also captures small invertebrates living on coral reefs, such as tube worms, small crustaceans, and other benthic organisms. Thanks to its long pointed rostrum and fine claws, it explores coral and rock crevices in search of food, mainly at night when it is most active.

During the breeding period, once the female yellowline arrow crab has been fertilized by the male, she carries the eggs until they hatch.

To observe the yellowline arrow crab, one must carefully examine the crevices of coral reefs in search of this animal, which at first glance strongly resembles a spider. You may then spot its long, thin legs protruding from its shelter.