Tony Wu / Zoarchias major eelpout (Zoarchias major) with her mouth wide open. Yamaguchi Prefecture, Japan, Pacific Ocean.
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Guy Edwardes / Hippopotamus (Hippopotamus amphibius) in Chobe River, Botswana.
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Guy Edwardes / Little bee-eater (Merops pusillus) vocalising whilst perched on branch, Khwai, Botswana.
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Alex Mustard / Striped mackerel (Rastrelliger kanagurta) mouth wide open as it swims through the water, filtering zoopankton with its gill rakers. Marsa Shouna, Port Ghalib, Marsa Alam, Egypt. Red Sea
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Ingo Arndt / Brown Booby (Sula leucogaster plotus) head portrait, with wide bill open, Christmas Island, Indian Ocean, Australian Territory, November
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Ernie Janes / RF- Lesser black-backed gulls (Larus fuscus) calling from shoreline, beaks open, England, UK, May. (This image may be licensed either as rights managed or royalty free.)
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Solvin Zankl / Great capricorn beetle (Cerambyx cerdo) on Oak tree (Quercus sp) Niedersachsische Elbtalaue Biosphere Reserve, Lower Saxonian Elbe Valley, Germany, July.
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Alex Hyde / Raft Spider (Dolomedes fimbriatus) female on heathland pool. Note wing of predated damselfly floating on water's surface under the spider. Dorset, UK. August.
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Solvin Zankl / Frilled shark (Chlamydoselachus anguineus) specimen with mouth open, from Atlantic Ocean, at a depth of 729m.
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Anup Shah / African elephants (Loxodonta africana) gathering at a waterhole, wide angle view. Maasai Mara National Reserve, Kenya.
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Anup Shah / Cheetah (Acinonyx jubatus) male juvenile aged about 18 months approaching a kill, wide angle view. Maasai Mara National Reserve, Kenya.
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Anup Shah / Marabou storks (Leptoptilos crumeniferus) feeding on catfish in waterhole, wide angle view. Maasai Mara National Reserve, Kenya.
