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Amphipods are the most abundant of free-swimming creatures in the deepest depths
Larvae: Although adult echinoderms (sea stars and kin) we are used to seeing have radial symmetry, their larvae start out with bilateral as do most vertebrates. These larval brittle stars are an important pelagic stage for dispersal of their bottom-bound parents. They capitalize on the abundance of food in the plankton to support early growth prior to metamorphosis and settlement to the sea floor.
The plastics industry has introduced a trawling net specially fitted to fish plastic waste out of the sea into in the fight against debris in Danish waters. In the North Sea alone it is estimated that over 20,000 tonnes of waste winds up in the sea each year. Much of it is plastic, and members of the Danish plastics industry felt they had a responsibility to help clean up the mess.