The existence of a wide bed of the crinoid Leptometra celtica (M’Andrew and Barrett 1857), at approximately 500mdepth, off the Portuguese south coast is inferred from remotely operated vehicle (ROV) transects carried out as part of a research project (IMPACT) aimed at evaluating the impact of bottom trawling on the burrowing crustacean Norway lobster (Nephrops norvegicus) fishing grounds. The crinoid bed is loc...