Ingo Arndt / Sun rising over ice formations on Lake Baikal. Siberia, Russia. February 2019.

Gary Bell/ Oceanwide / Wonderpus Octopus (Wunderpus photogenicus), Anilao, Philippines

Gary Bell/ Oceanwide / Wonderpus Octopus (Wunderpus photogenicus), Anilao, Philippines

David Shale / Pram bug (Phronima) swimming, Mid-Atlantic Ridge. Deep sea species.

Juergen Freund / Two whip coral gobies (Bryaninops yongei) on a black coral sea whip. Lembeh Strait, North Sulawesi, Indonesia.

Suzi Eszterhas / Two Purple / Striped Jellyfish (Pelegia / Chrysaora colorata) Monterey Bay Aquarium, California, USA, Captive

Billy Black / Distant figures with kayak on Sandy Island, near Carriacou Island, the Grenadines, Caribbean, January 2010.

Wild Wonders of Europe / Sá / Jellyfish, Mull, Scotland, June 2009

Wild Wonders of Europe / Benvie / Male Spanish luna / Isabelline moth (Graellsia isabellina) on twig, Queyras Natural Park, France, May 2009

Shane Gross / Grass squid (Pickfordiateuthis pulchella). Eleuthera, Bahamas.

Tony Wu / Smooth lumpsucker (Aptocyclus ventricosus) embryos inside eggs, eyes visible. Non-viable eggs without embryos presernt. Hokkaido, Japan. May.

Ingo Arndt / Ice formations on Lake Baikal at sunset. Siberia, Russia. February 2019.