aquariums,
bioluminescence,
cephalopods,
cetaceans,
chromatophores,
cnidarians,
color changes,
comb jellies,
coral,
cuttlefish,
echinoderms, fantastic coloration,
fish,
jellyfish,
manatees,
mantis shrimp,
mollusks,
octopodes,
octopus,
plankton, pre-whale archaeocetes,
sailboats,
salt water,
sea anemones,
sea dragons,
sea squirts,
sea stars,
seahorses,
sponges,
squid,
the deep sea,
the discovery channel, the early paleozoic era, the intertidal zone, the mid-ocean,
the mollusk,
the slowness underwater,
tidal pools, tusked narwhals,
uninhabited islands