Ridgeback Slipper Lobster

Overview

The Ridgeback Slipper Lobster (Scyllarides haanii), also known as the Aesop or humpbacked slipper lobster, is a large, solitary marine crustacean found throughout the Indo-Pacific region. It is widely considered the largest species within the Scyllarides genus, typically leading a secretive, nocturnal lifestyle.

Appearance

This species is characterized by a thick, inflated body with a distinct row of large, pronounced bumps along its back, particularly on the second and third abdominal segments, with a notable hump on the fourth. Its coloration is generally orange with purple margins. Like other slipper lobsters, it lacks the long, thin antennae and claws found in many other lobster families; instead, its second pair of antennae have evolved into broad, flattened, plate-like structures that resemble shovels or flippers.

Distribution & habitat

This benthic species inhabits warm coastal waters, where it is commonly found on coral reefs and rocky bottoms. It is known to shelter during the day in dark holes, crevices, or on the ceilings of underwater caves. Its range spans the Indian and Pacific Oceans, including areas such as Hawaii, Japan, China, Indonesia, and Australia.

Biology & behavior

Scyllarides haanii is a nocturnal forager that remains hidden in protected areas during daylight hours. It is not considered an abundant species anywhere in its range. As a crustacean without defensive claws, it relies on its thick, resilient exoskeleton for protection against predators.