Juergen Freund / Carrier / Sea urchin crab (Dorippe frascone) carrying a fire urchin as a deterrent to predators. Lembeh Strait, North Sulawesi, Indonesia

Juergen Freund / Schooling Banggai cardinalfish in anemone tentacles. (Pterapogon kaudemi). Lembeh Strait, North Sulawesi, Indonesia

Juergen Freund / Wonderpus (Wonderpus photogenicus) swimming well above the sea bed. Lembeh Strait, North Sulawesi, Indonesia.

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

Juergen Freund / Floating fruit of a Cannonball mangrove (Xylocarpus granatum) which when opened has seeds like a natural puzzle. Lembeh Strait, North Sulawesi, Indonesia, September 2009

Juergen Freund / Baby green turtle (Chelonia mydas) hatchling in the shallows of the beach, swimming out to sea. Anano Island, Wakatobi, South Sulawesi, Indonesia, November

Juergen Freund / Baby green turtle (Chelonia mydas) hatchling in the shallows of the beach, swimming out to sea. Anano Island, Wakatobi, South Sulawesi, Indonesia, November.

Alex Mustard / In-camera motion blur image of a female Hedgehog Seahorse (Hippocampus spinosissimus). Lembeh Strait, Sulawesi, Indonesia, Molluca Sea, March.

Juergen Freund / Chromodoris nudibranch (Cadlinella sp.) Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Estuary / Spotted / Common seahorse (Hippocampus kuda) in the rubble. Lembeh Strait, Sulawesi, Indonesia

Georgette Douwma / False fire urchin (Astropyga radiata) grouped on sandy bottom. Lembeh Strait, North Sulawesi, Indonesia.

Georgette Douwma / Wonderpus (Wunderpus photogenicus) octopus on sea bed, Lembeh Strait, North Sulawesi, Indonesia.

Laurie Hedges / Tracking shot showing a large area of rainforest flooded by a hydroelectric dam in the southern reaches of the Amazon, Brazil, 2019.