description Spanner Crab Overview
The spanner crab, Ranina ranina, is a marine crab found across tropical and subtropical parts of the Indo-Pacific. It has a flattened, elongated reddish-orange body and broad, spade-like front appendages adapted for digging into sandy seabeds, where it spends much of its time buried. The species supports commercial fisheries in several regions, including eastern Australia, and is harvested as seafood using gear designed to draw the crabs from the sediment.
help Spanner Crab FAQ
What is the scientific name of the Spanner Crab?
The scientific name for the spanner crab is Ranina ranina. It is the only surviving species within its specific genus.
Where can spanner crabs be found in the wild?
Spanner crabs inhabit coastal marine waters across tropical and subtropical parts of the Indo-Pacific region. They are particularly common off the eastern coast of Australia, where they are a significant commercial fishery.
What does the Spanner Crab look like?
It has a highly distinctive flattened, elongated reddish-orange body. It also features broad, spade-like front appendages that are perfectly adapted for digging backward into sandy seabeds.
How do spanner crabs hunt for their prey?
Unlike many crabs that actively hunt or scavenge, spanner crabs are ambush predators. They bury themselves completely under the sand with only their eyes exposed, waiting to grab small fish and crustaceans that pass over them.
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