1
Any of various marine coelenterates of a soft, gelatinous structure,
2
A system formed by the interaction of a community of organisms with their environment
3
Anything that has been transmitted from the past or handed down by tradition
4
A limit or boundary of any kind
5
Any of various water- and land-dwelling reptiles having the trunk enclosed in a shell.
6
The hard, often brightly colored skeleton of certain small sea animals called polyps, or any of the animals themselves.
7
A ridge of rock, sand, coral, etc, the top of which lies close to the surface of the sea
8
The land next to the sea
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