Tony Wu / Sperm whale (Physeter macrocephalus), ten swimming together in gathering of more than 50 individuals. Whales with flatulence and defecating. Sri Lanka.
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Andy Rouse / Walrus (Odobenbus rosmarus) colony discharging gas on beach. Svalbard, Norway, August 2011.
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Tony Wu / Sperm whale (Physeter macrocephalus) group engaged in social activity, with one whale separated from the group while passing gas. Flatulence is common when sperm whales socialise near the ocean surfac...
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Andy Rouse / Walrus (Odobenbus rosmarus) colony discharging gas on beach. Svalbard, Norway, August 2011.
