For these reasons, Ulysses was forced to steer between the rock of the whirlpool and the rock which seemed like a harmless river, and the men, in fear, ceased to hold the oars, and down the stream the oars splashed in confusion.
Sea levels have fluctuated dramatically in geologic times. It was 2-6 m above the present level during the last interglacial period, 125,000 years ago, but 120 m below present levels during the last Ice Age, 20,000 years ago.
Asterias is a free living marine echinoderm. It crawls slowly in shallow water to very great depth. It prefers rocky areas where locomotion and concealment are easier. It lives at the bottom. The bottom dwellings are called benthozoic.