Krill, found in all of Earth's oceans, are estimated to have the largest biomass of any animal on earth, amounting to something between half and three quarters of a billion tonnes. Commercial fishing for human consumption and use amounts to a couple hundred thousand tonnes annually. They live off plankton and support a large food chain, sometimes swarming in concentrations of around 50,000 individuals per cubic meter.
crustaceans
Actually, a sea anemone is none of these. Sponges are sessile creatures, arthropods have exoskeletons, and fish swim. Sea anemones are a type of cnidarian. They often reproduce by releasing polyps. They are related to corals and jellyfish.
The North Sea.
North Sea
It lives almost everywhere, in sea in land... etc
No. Insects are arthropods. Cnidarians are animals such as jellyfish and sea anemones.
The sea
Primitive arthropods, fish, orthocones and sea scorpiond.
Sailing galleys.
Portuguese
Because it was the preeminent sea power.
Numbered among the arthropods might be these four: brine shrimp, e.g., Artemia salina ("sea monkeys"), the parasitic tongue-eating louse (Cymothoa exigua), the yak-killer hornet (Vespa mandarinia japonica), and the sea scorpion or Eurypterid.