Tony Wu / Female Northern pygmy squid (Idiosepius paradoxus) depositing eggs on a blade of eelgrass (Zostera marina), Yamaguchi Prefecture, Japan.

Tony Wu / Female Northern pygmy squid (Idiosepius paradoxus) preparing to lay another egg on a blade of eelgrass (Zostera marina), Yamaguchi Prefecture, Japan.

Shane Gross / Dugong (Dugong dugon) feeding on Tapegrass (Halophila stipulacea), accompanied by juvenile Golden trevally fish (Gnathanodon speciosus). Marsa Alam, Egypt.

Shane Gross / Cunner (Tautogolabrus adspersus) pair in Eelgrass (Zostera marina) bed. Newfoundland, Canada. September.

Shane Gross / Green turtle (Chelonia mydas) feeding on Turtlegrass (Thalassia testudinum) seagrass bed. The Bahamas.

Dimitris Poursanidis / Neptune seagrass meadow (Posidonia oceanica) in the coastal zone of the Samaria National Park, Chania, Crete

Dimitris Poursanidis / Abandonded fishing gear in seagrass meadow (Posidonia oceanica), Agia Pelagia, Heraklion, Crete, Greece

Nick Hawkins / American lobster (Homarus americana) in eelgrass (Zostera marina). Nova Scotia, Canada. July

Shane Gross / Queen conch (Lobatus gigas) juvenile feeding on algae growing on Seagrass (Thalassia testudinum) blades. Eleuthera, Bahamas.

Shane Gross / American crocodile (Crocodylus acutus) with open mouth amongst Seagrass (Alismatales). Gardens of the Queen National Park, Cuba.

Willem Kolvoort / Water filled ditch with shadow of a tree on water with Fringed waterlily (Nymphoides peltata) Star duckweed (Lemna trisulca) Netherlands. July 2015. Commended in the Underwater World Category of the G...

Michael Hutchinson / Titan arum (Amorphophallus titanum), in flower, cultivated specimen in botanic garden, native to Sumatra. Kew Gardens, London, UK. 23 April 2016 This species has the largest unbranched flower inflores...

Michael Hutchinson / Titan arum (Amorphophallus titanum), in flower, cultivated specimen in botanic garden, native to Sumatra. Kew Gardens, London, UK. 23 April 2016 This species has the largest unbranched flower inflores...

Georgette Douwma / Swiss cheese plant (Monstera deliciosa) in flower, close up of spadix.

Tony Heald / RF- Hippopotamus (Hippopotamus amphibius) surrounded by water lettuce. Kruger National Park, South Africa. (This image may be licensed either as rights managed or royalty free.)

Alex Mustard / Snakelocks anemone (Anemonia viridis) growing on a stalk of Eelgrass (Zostera marina) on the seabed, Isle of Coll, Inner Hebrides, Scotland, UK, Atlantic Ocean. August.

Alex Mustard / Eelgrass (Zostera marina) meadow in shallow water, Swanage, Dorset, UK. English Channel. July.

Alex Mustard / School of Lesser sand eels (Ammodytes tobianus) swimming over an Eelgrass (Zostera marina) meadow in shallow water. Swanage, Dorset, UK. English Channel. July.

Alex Mustard / A large herbivorous Seahare (Aplysia punctata) crawling around a Common eelgrass (Zostera marina) meadow, Helford River Estuary, Cornwall, UK.

Alex Mustard / Snakelocks anemone (Anemonia viridis) growing on leaves in a Common eelgrass (Zostera marina) meadow, Helford River Estuary, Cornwall, UK.

Alex Mustard / Leaves in a Common eelgrass (Zostera marina) meadow, as they reach up to the sun, Helford River Estuary, Cornwall, UK. English Channel.

Alex Mustard / Large, male Spider crab / Cornish king crab (Maja brachydactyla) sheltering in Common eelgrass (Zostera marina) meadow, Helford River Estuary, Cornwall, UK, English Channel.

Alex Mustard / RF - Large male Spider crab / Cornish king crab (Maja brachydactyla) sheltering in Common eelgrass (Zostera marina) meadow Helford River Estuary, Cornwall, UK. (This image may be licensed either as ri...

Guy Edwardes / Splendid treefrog (Cruziohyla calcarifer) on Swiss cheese plant (Monstera deliciosa), Lowland rainforest, Costa Rica.

Andy Rouse / European otter (Lutra lutra) swimming in a pond covered with Common duckweed (Lemna minor), West Country Wildlife Centre, Okehampton, Devon, UK. August. Controlled conditions.

Andy Rouse / European otter (Lutra lutra) swimming in pond covered with Common duckweed (Lemna minor), West Country Wildlife Centre, Okehampton, Devon, UK. August. Controlled conditions.

Andy Rouse / European otter (Lutra lutra) jumping from jetty into a pond covered with Common duckweed (Lemna minor), West Country Wildlife Centre, Okehampton, Devon, UK. August. Controlled conditions.

Andy Rouse / European otter (Lutra lutra) jumping from jetty into a pond covered with Common duckweed (Lemna minor), West Country Wildlife Centre, Okehampton, Devon, UK. August. Controlled conditions.

Andy Rouse / European otter (Lutra lutra) jumping from jetty into a pond covered with Common duckweed (Lemna minor), West Country Wildlife Centre, Okehampton, Devon, UK. August. Controlled conditions.

Andy Rouse / RF - European otter (Lutra lutra) jumping from jetty into a pond covered with Common duckweed (Lemna minor), West Country Wildlife Centre, Okehampton, Devon, UK. August. Controlled conditions. (Thi...

Chris Mattison / Water lettuce (Pistia stratiotes), Borneo, Malaysia

Alex Mustard / Nudibranch (Polycera quadrilineata) crawling up a blade of eelgrass (Zostera marina) in a seagrass meadow. Portland Harbour, Weymouth, Dorset, England, United Kingdom. English Channel.

Alex Mustard / Tape seagrass (Enhalus acoroides) growing in shallow water and reflected in the surface of shallow water, beneath mangrove trees. Yanggefo Island, Gam Island, Raja Ampat, West Papua, Indonesia. Dampie...

Franco Banfi / Northern pike (Esox lucius) amongst Shining pondweed (Potamogeton lucens), Sion, Valais canton, southwestern Switzerland, Europe

Franco Banfi / Northern pike (Esox lucius) amongst Shining pondweed (Potamogeton lucens), Sion, Valais canton, southwestern Switzerland, Europe

Franco Banfi / Northern pike (Esox lucius) amongst Shining pondweed (Potamogeton lucens), Sion, Valais canton, southwestern Switzerland, Europe

Franco Banfi / Northern pike (Esox lucius) amongst Shining pondweed (Potamogeton lucens), Sion, Valais canton, southwestern Switzerland, Europe

Franco Banfi / Pondweed (Potamogeton lucens), Sion, Valais canton, southwestern Switzerland, Europe

Sergio Hanquet / Diver looking over patch of Little Neptune seagrass (Cymodocea nodosa) Tenerife.

Derek Galon / Elephant foot yam (Amorphophallus paeoniifolius) one of largest flowers in the world. Blooming in Papillote Garden, Dominica, West Indies.

Derek Galon / Elephant foot yam (Amorphophallus paeoniifolius) one of largest flowers in the world. Blooming in Papillote Garden, Dominica, West Indies.

Shane Gross / Kelp humpback shrimp (Hippolyte clarki) on eelgrass (Zostera marina) off Vancouver Island, British Columbia, Canada