The crab " Pagurus bernhardus " was the most likely scavenger to consume " O . ophiura " in baited traps.
2.
Another study examined the rate at which the discarded invertebrates sank to the bottom and their ultimate fates . " O . ophiura " sank relatively slowly and was preyed upon by seabirds, and the arms were eaten by fish.
3.
In the Clyde sea fishery for scampi ( " Nephrops norvegicus " ) in Scotland, the unwanted invertebrates that get caught up in the trawl include " O . ophiura ", as well as the starfish " Asterias rubens ".
4.
A study undertaken to discover the survival rate of these animals when discarded and returned to the water found that uninjured " A . rubens " had a mortality rate of 4 %, whereas virtually all the " O . ophiura " died within 14 days, even when they were returned to the sea immediately after being caught.
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