The growth and development of the Ediacara biota is also a subject of continued research, and this has discredited the sea pen hypothesis.
22.
Analysis of rachis growth rings indicates sea pens may live for 100 years or more, if the rings are indeed annual in nature.
23.
As octocorals, sea pens are colonial animals with multiple polyps ( which look somewhat like miniature sea anemones ), each with eight tentacles.
24.
Huxley's Actinozoa comprised the sea-anemones, corals and sea pens, on the one hand, and the Ctenophora ( comb jellies ) on the other.
25.
In his new sea pen, Keiko will be reintroduced to the sights and sounds of the waters where he was captured as a 2-year-old.
26.
That means they grow faster than clams, lobsters, jelly fish, marine worms, squids, octopuses, cuttlefishes, sea pens, sea stars, comb jellies, corals and mussels.
27.
Keiko will be loaded onto a barge and taken to a sea pen _ the size of a football field _ in a protected cove.
28.
Although named after their feather-like appearance reminiscent of antique quill pens, only sea pen species belonging to the suborder "'Subselliflorae "'live up to the comparison.
29.
The initial release encountered problems, with some of the dolphins losing a lot of weight; three of them were recaptured and returned to the sea pen.
30.
The whale was loaded onto a barge and floated past spectacular 800-foot ( 250 meter ) volcanic cliffs toward his sea pen in a protected cove.
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