Pascal Kobeh / Diver exploring 'Lotus' artificial reef, built in 2001 with a steel frame using mild electric currents to encourage coral growth. Vabbinfaru Island in North Male Atoll, Maldives, Indian Ocean. Septemb...

Pascal Kobeh / Diver exploring 'Barnacle' artificial reef, built in 2001 with a steel frame using mild electric currents to encourage coral growth. Shape is built as habitat for fish. Ihuru Island in North Male Atol...

Pascal Kobeh / Diver exploring 'Barnacle' artificial reef, built in 2001 with a steel frame using mild electric currents to encourage coral growth. Shape is built as habitat for fish. Ihuru Island in North Male Atol...

Pascal Kobeh / Split level view of 'Barnacle' artificial reef with scuba diver. Built in 1997 with a steel frame using mild electric currents to encourage coral growth. Ihuru Island in North Male Atoll, Maldives,...

Pascal Kobeh / Diver exploring 'Lotus' artificial reef, built in 2001 with a steel frame using mild electric currents to encourage coral growth. Vabbinfaru Island in North Male Atoll, Maldives, Indian Ocean. Septemb...

Andy Jackson / 2020VISION / Dahlia sea anemones (Urticina / Tealia felina) moving in tidal current, Westray, Orkney, Scotland, UK, June.

Andy Jackson / 2020VISION / Pink and orange Jewel anemone (Corynactis viridis) groups amongst red weed moving in tidal current, Muckle Flugga, Shetland, Scotland, UK, June.

Andy Jackson / 2020VISION / Pink and orange Jewel anemone (Corynactis viridis) groups amongst red weed moving in tidal current, Muckle Flugga, Shetland, Scotland, UK, June.

Andy Jackson / 2020VISION / Oaten pipe hydroid group (Tubularia indivisa), with Jewel anemones (Corynactis viridis), Muckle Flugga, Shetland, Scotland, UK, June.

Andy Jackson / 2020VISION / Dead man's fingers (Alcyonium digitatum), open and feeding in the tidal current, Noup Head, Westray, Orkney, June 2011.

Andy Jackson / 2020VISION / Sea anemones (Sagartia elegans) moving in tidal current, Westray, Orkney, Scotland, UK, June.

Doug Perrine / Flatback turtle (Natator depressus) resting on sea bed, Western Australia.

Tim Laman / Red Bird of Paradise (Paradisaea rubra) male, Raja Ampat, Indonesia

Tim Laman / Red Bird of Paradise. (Paradisaea rubra) male performing practice display at tree-top lek. Raja Ampat, Indonesia

Tim Laman / King Bird of Paradise (Cicinnurus regius) male, New Guinea

Martin Willis / Victoria's Riflebird (Ptiloris victoriae) female feeding on berries, Malanda, Queensland, Australia

Tim Laman / Red Bird of Paradise (Paradisaea rubra) adult male at lek display site in the top of a canopy tree. Batanta Island, Papua, Indonesia. Near-threatened.

Tim Laman / Wilson's Bird of Paradise (Cicinnurus respublica) male in display court, Batanta Island, Papua, Indonesia. Near-threatened.

Tim Laman / Juvenile male Red Bird of Paradise (Paradisaea rubra) perched, Batanta Island, Papua, Indonesia. Near threatened.

Rolf Nussbaumer / Ruby-throated Hummingbird {Archilochus colubris} male feeding on Red Bird Of Paradise flower(Caesalpinia pulcherrima) Rio Grande Valley, Texas, USA

Konrad Wothe / King Bird-of-paradise (Cicinnurus regius) male displaying, Salawati Island, Irian Jaya, west Papua, Indonesia

Ch'ien Lee / Wilson's Bird-of-paradise (Cicinnurus respublica) male courting at display site, Waigeo, Indonesia

Joel Sartore / Photo Ark / King bird-of-paradise (Cicinnurus regius) male looking around and vocalising. Then the animal ruffles its feathers. Walsrode Bird Park, Walsrode. Captive.

Joel Sartore / Photo Ark / King bird-of-paradise (Cicinnurus regius) male, head portrait, Walsrode Bird Park, Germany. Captive, occurs in New Guinea.