Non-fish groups include whales, dolphins, seabirds, squid, echinoderms, benthic crustaceans and small worms.

BBC: The model should aid future management of the North Sea

Whale bones for example are known to constitute an excellent surface on which benthic communities deprived of local sources of energy can settle and develop.

UNESCO: MEDIA SERVICES

Thus, the composition of benthic communities (the term indicates a dependency on the bottom) will rely partly on the availability of organic substances falling all the way down to the seabed.

UNESCO: MEDIA SERVICES