Ingo Arndt / Sea trout (Salmo trutta trutta) alevin just hatched with full yolk sac, Europe
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Solvin Zankl / As soon as it entered the water the young Olive ridley sea turtle (Lepidochelys olivacea) struggles against the swell to swim away from the coast. The swimming frenzy lasts for approximately 48 hours...
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Ingo Arndt / Amu-Darya Trout (Salmo trutta trutta) alevin freshly hatched with full yolk sac, Europe
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Mark Bowler / Silver arowana (Osteoglossum bicirrhosum) Amazonian fish occuring in Varzea flooded forests of the amazonian rainforest. These babies with their yolk sacks have been collected for the ornamental fish...
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Jeff Rotman / Newborn Spiny dogfish {Squalus acanthias} with yolk sac attached, Atlantic, USA
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Claudio Contreras / Yolk-yellow prosthechea orchid (Prostechea / Encyclia vitellina) flower. Cultivated, found in oak, pine and cloud forest in Mexico, Honduras and Nicaragua, August
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Tony Wu / Hairchin goby (Sagamia geneionema) eggs. Though still early in development, individual transparent fish embryos are visible attached to the yellow-orange yolk sacs. Miho, Shizuoka Prefecture, Japan, P...
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Tony Wu / Flamboyant cuttlefish (Metasepia pfefferi) close up of egg with the developing juvenile attached to its yolk sac and visible inside the egg, Lembeh Strait, North Sulawesi, Indonesia
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Andy Sands / Large white butterfly (Pieris brassicae) close up side view of newly laid eggs showing yellow coloured yolk inside, UK, captive . Focus stacked image - sequence 1 of 2
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Andy Sands / Close up top view of newly Large white butterfly (Pieris brassicae) laid eggs showing yellow coloured yolk inside, UK, Captive. Focus stacked image
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Laurie Campbell / Common / Viviparous Lizard (Zootoca vivipara) young breaking free from egg membrane it was born in. This species can both give birth to live young in a thin membrane and lay eggs. Burnmouth, Berwicks...
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Laurie Campbell / Common / Viviparous Lizard (Zootoca vivipara) young breaking free from egg membrane it was born in. This species can both give birth to live young in a thin membrane and lay eggs. Burnmouth, Berwicks...