Crustacea - lobsters

Class Malacostraca - lobsters

Slipper lobster, Parribacus antarcticus

The Slipper lobster, also known as the Mitten lobster, below, is found in the Indo-Pacific and the Caribbean. It is a bottom dweller found at depths down to 20 metres. Its preferred habitat is coral or stony reefs with a sandy or muddy bottom.

As with other Malacostraca it has two pairs of antennae, but in the Slipper lobster one pair is flattened into a pair of large, projecting plates. Also unlike other Malocostracans it has no claws. It can grow up to 20 cm long, but most are 12 - 15 cm long.

Slipper lobsters are nocturnal, and hide during the day. They eat molluscs, shrimps, crabs and urchins.

Slipper lobsters are edible.

Slipper lobster, Parribacus antarcticus

Mud lobster, Thalassina anomala

The mud lobster, on the right is found in mangrove swamps from the Indian Ocean down to N. W. Australia. It digs into the mud feeding off organic matter. In the process it raises a large mound, sometimes three metres in height. These mounds are used as habitats by many species. It is considered a keystone species in mangrove swamps because its digging aerates the mud and brings deeper mud to the surface, as well as creating new habitats. The lobster is nocturnal spending its days inside its blocked up U-shaped burrow under the mound.

The mud lobster is considered a pest by fish and prawn farmers because of its habit of digging and burrowing, and so weakening the bunds constructed by the farmers.

Mud lobsters are edible, but are not considered very tasty.

Although their common name implies they are lobsters, in fact they are more closely related to ghost shrimps.

Mud lobster, Thalassina anomala
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