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Ryan, Paul R. – Oceanus, 1978
Describes four orders of marine mammals: Cetacea (whales and porpoises), Pinnipedia (seals, sea lions, and walruses), Sirenia (sea cows), and Carnivora (sea otter, marine otter, and polar bear). (MA)
Descriptors: Conservation (Environment), Depleted Resources, Environmental Education, Guides
Peer reviewed Peer reviewed
Holt, Sidney – Oceanus, 1978
During the present decade, there has been increasing interest in and concern for the fate of marine mammals. Aspects of these changing attitudes, including legislative actions, are examined. (MA)
Descriptors: Conservation (Environment), Depleted Resources, Environmental Education, Fisheries
Peer reviewed Peer reviewed
Pryor, Karen; Norris, Kenneth S. – Oceanus, 1978
Recent legislation has been enforced to reduce porpoise losses in the nets of tuna fishermen. This article discusses some of the behavioral causes of porpoise mortality and described solutions that may or may not work. (MA)
Descriptors: Conservation (Environment), Depleted Resources, Environmental Education, Fisheries
Peer reviewed Peer reviewed
Ray, G. Carleton; And Others – Oceanus, 1978
Presents a method of wildlife management that is based on a critical habitat approach. This is illustrated with the walrus as an example. (MA)
Descriptors: Conservation (Environment), Depleted Resources, Ecology, Environmental Education
Peer reviewed Peer reviewed
Watkins, William A. – Oceanus, 1978
Radio tags to track wildlife have been used for years. However, such tagging of whales has been more complicated and less successful. This article explores the latest technology that is designed to give information over a long period of time. (MA)
Descriptors: Animal Behavior, Behavior Patterns, Depleted Resources, Ecology