ナショナルジオグラフィックのインスタグラム(natgeo) - 4月15日 00時01分

Video by @bertiegregory | Happy National Dolphin Day! A pod of spotted dolphins arrive at a house-sized "bait ball" of lantern fish. Lantern fish undertake a daily vertical migration. Normally they come to the surface at night, returning to the deep during the day. Occasionally, for reasons we don’t understand, they get caught at the surface and a feeding frenzy develops. Filmed for my show "Epic Adventures with Bertie Gregory," streaming on @disneyplus. #NationalDolphinDay

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