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Porpoise - Wikipedia
What's the difference between dolphins and porpoises?
Porpoise | Definition, Habitat, & Facts | Britannica
Harbour porpoise - Wikipedia
10 Porpoise Facts - Fact Animal
meet the different species - Whale & Dolphin Conservation USA
Harbor Porpoise | National Geographic
Harbor Porpoise | National Wildlife Federation
Harbor Porpoise | NOAA Fisheries
Harbour Porpoise — Porpoise Conservation Society