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Red Sea Bannerfish (Heniochus intermedius). It has a deeply compressed body that is pale yellow fading to white, two wide, angled black bands, and an elongated white dorsal filament.
Humpback Whale Dorsal Fin in Antarctica, Marine Wildlife showing Whales Back Surfacing while Swimming in Southern Ocean Sea Water with Beautiful Winter Glacier Landscape Scenery on Antarctic 4k
An aerial vertical slow-motion of a large humpback whale swimming in blue water, showing its distinctive dorsal surface off the coast of Sydney
Whale Watching in Sitka, Alaska. Dorsal fin of a Humpback whale.
A close up shot of a seal swimming on the surface of the ocean, with its back and dorsal fin visible above the clear blue water

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