Sergio Hanquet / Green sea turtle (Chelonia mydas) eating Seagrass (Cymodocea nodosa) on sea floor, portrait. Tenerife, Canary Islands.

Shane Gross / Caribbean reef shark (Carcharhinus perezi) swimming over Manatee grass (Syringodium filiforme). Nassau, Bahamas.

Alex Mustard / Bed of Clump seagrass (Cymodocea serrulata) in late afternoon. Ras Katy, Sinai, Egypt. Gulf of Aqaba, Red Sea.

Richard Herrmann / Surfgrass (Phyllospadix sp), San Clemente Island, Channel Islands, California

Sergio Hanquet / Green sea turtle (Chelonia mydas) feeding on Seagrass (Cymodocea nodosa) on the seabed, Tenerife, Canary Islands, Atlantic Ocean.

Sergio Hanquet / Pipefish (Syngnathus acus) in a seagrass meadow (Cymodocea nodosa) Tenerife, Canary Islands.

Sergio Hanquet / Pipefish (Syngnathus acus) in a seagrass meadow (Cymodocea nodosa) Tenerife, Canary Islands.

Sergio Hanquet / Pearly razorfish (Xyrichthys novacula) hunting in sea grass (Cymodocea nodosa), Tenerife, Canary Islands.

Shane Gross / Southern stingray (Dasyatis americana) feeding in a seagrass (Syringodium filiforme) meadow near a coral reef, Bahamas.

Alex Mustard / Seagrass meadow (Halodule pinifilia). Seagrass is threatened in the Maldives, where many resorts actively pluck the plants from the water to create a sandy seabed, but generating major problems of ero...

Alex Mustard / Seagrass meadow (Cymodocea rotundat). Seagrass is threatened in the Maldives, where many resorts actively pluck the plants from the water to create a sandy seabed, but generating major problems of ero...

Sergio Hanquet / Shrimp (Hippolyte inermis) living on Little neptune grass (Cymodocea nodosa) Tenerife, Canary Islands.