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Studies the structure, feeding behavior, and ecology of various marine hydroids, including hydra, obelia, physalia, Portuguese man-of-war, and more.
Environmental Media, 1008 Paris Ave., Port Royal, SC 29935, Phone: (843)986-9034, Toll-free: 800-368-3382, Fax: (843)986-9093, Email: bpendergraft@envmedia.com, URL: http://www.envmedia.com
Available on VHS
Running time 12 minutes.
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