Thromidia
Thromidia is a genus of starfish in the family Mithrodiidae.
Description and characteristics
These are unusually massive sea stars with five sausage-shaped arms, containing probably the heaviest species of Asteroidea, up to 6 kg.Species
There are four recognized species according to World Register of Marine Species:- Thromidia brycei Marsh, 2009 – Western Australia
- Thromidia catalai Pope & Rowe, 1977 – West Pacific
- Thromidia gigas – South-west Indian ocean
- Thromidia seychellesensis Pope & Rowe, 1977 – Seychelles