Order
Mysida (Opossum shrimps)
Archaeomysis grebnitzkii. Photo: (c) Alex Bairstow, some rights reserved (CC BY-NC)
Mysida is an order of small, shrimp-like crustaceans in the malacostracan superorder Peracarida. Their common name opossum shrimps stems from the presence of a brood pouch or “marsupium” in females. The fact that the larvae are reared in this pouch and are not free-swimming characterises the order. The mysid’s head bears a pair of stalked eyes and two pairs of antennae. The thorax consists of eight segments each bearing branching limbs, the whole concealed beneath a…
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