Linuparus trigonus
Spear lobsters inhabit the sandy and muddy seabed at depths of 200 to 350 meters. Compared with other lobster relatives that inhabit shallow rocky reefs, their eyes are significantly smaller, indicating that they do not rely much on sight (at the depths at which they live there is not much light). They have a triangular-shaped ridge in the center of the carapace (from where they get their name). Their second pair of antennae (antennules), a trademark of lobsters, instead of being long and whip-like as expected, are thick, flat, and hard, as well as shorter than their body. In general, lobsters have a sound producing organ at the base of their antennules. The spear lobster does as well, which is used to communicate with members of its same species.
