Nigel Cattlin / Sand bubbler crab (Scopimera sp) on sand at low tide, Andaman Sea. Near Krabi, Krabi Province, Thailand.

Nigel Cattlin / Tourists and boats at Maya Beach, limestone rock cliffs in background. Koh Phi Phi Leh, Krabi Province, Thailand. 2015.

Nigel Cattlin / Tsunami warning sign on Maya Beach, Koh Phi Phi, Thailand, an area devastated by 2005 tsunami.

Nigel Cattlin / Bubbler crab (Scopimera sp) with balls of sand and escape hole forming pattern in sand. Andaman Sea at low tide, near Krabi, Krabi Province, Thailand.

Nigel Cattlin / Balls of sand and escape holes forming pattern in sand, created by Bubbler crab (Scopimera sp). Andaman Sea at low tide, near Krabi, Krabi Province, Thailand.

Nigel Cattlin / Murainagrass (Ischaemum muticum) flower spike. Krabi, Thailand.

Juan Carlos Munoz / Men unloading balls of natural rubber from pick up truck, Krabi province, Andaman Sea, Thailand, Asia

Juan Carlos Munoz / Fish farming at Mangrove swamp forest. Tung Yee Peng village. Koh Lanta. Krabi province, Andaman Sea, Thailand.

Juan Carlos Munoz / Sunset on Poda Island. Krabi coast. Krabi province, Andaman Sea, Thailand.

Juan Carlos Munoz / Sunset on Poda Island. Krabi coast. Krabi province, Andaman Sea, Thailand.

Juan Carlos Munoz / Limestone cliffs. Krabi coast. Krabi province, Andaman Sea, Thailand,

Juan Carlos Munoz / Jellyfish fishing. Krabi coast. Krabi province, Andaman Sea, Thailand.

Juan Carlos Munoz / Fishing on the Krabi coast. Krabi province, Andaman Sea, Thailand,

Juan Carlos Munoz / Fishing on the Krabi coast. Krabi province, Andaman Sea, Thailand,

Juan Carlos Munoz / Fishing on the Krabi coast. Krabi province, Andaman Sea, Thailand,

Juan Carlos Munoz / Rubber tree tapping on plantation, Krabi province, Andaman Sea, Thailand.

Ernie Janes / Boats in shallow water with distant rocky limestone outcrops, Railay resort, Ao Phra Nang, Ko Poda Island, Krabi Province, Thailand, December 2011.

Francis Abbott / Boats pulled up onto the beach of The Phi Phi islands, Krabi Province, southern Thailand.

Francis Abbott / The Phi Phi islands, Krabi Province, Southern Thailand.

Francis Abbott / Boats pulled up onto the beach of The Phi Phi islands, Krabi Province, southern Thailand.

Francis Abbott / Boats pulled up onto the beach of The Phi Phi islands, Krabi Province, southern Thailand.

Sirachai Arunrugstichai / Aerial view of Blacktip reef shark (Carcharhinus melanopterus) pup prowling over a sand flat along the water's edge by the beach of Maya Bay, Hat Noppharat Thara - Mu Koh Phi Phi National Park, Krabi,...

Sirachai Arunrugstichai / Fisherman swimming along the nets to rig it up with rope from the commercial purse seiner. Prior to pulling in the catch. Andaman Sea,Thailand, Krabi Province, Thailand, December 2015.

Sirachai Arunrugstichai / Variety of marine life from the Andaman Sea struggling in the nets from a purse seiner, Krabi Province, Thailand, December 2015.

Sirachai Arunrugstichai / Variety of marine life from the Andaman Sea are seen struggling in the nets from a purse seiner, Krabi Province, Thailand, December 2015.

Sirachai Arunrugstichai / Variety of marine life from the Andaman Sea are seen struggling in the nets from a purse seiner, Krabi Province, Thailand, December 2015.

Sirachai Arunrugstichai / Starry puffer (Arothron stellatus) is seen floating at the surface after being discarded as bycatch from a commercial purse seiner, Andaman Sea, Thailand, Krabi Province, Thailand, December 2015.

Sirachai Arunrugstichai / Giant devil ray (Mobula mobular) caught by a commercial purse seiner, prior to release back into the sea, Andaman Sea, Thailand, Krabi Province, Thailand, December 2015.

Sirachai Arunrugstichai / Freshwater spring in shade from thick forest canopy at Tha Pom Khlong Song Nam, with school of Rasbora (Rasbora sp.) and vegetations can be seen below the surface, Krabi Province, Thailand.

Sirachai Arunrugstichai / Freshwater crab species (unidentified), burrows into the substrate in the root system of a tree at Tha Pom Khlong Song Nam, Krabi Province, Thailand

Sirachai Arunrugstichai / Opening of fish trap on the seafloor, Hat Nophparat Thara, Mu Koh Phi Phi National Park, Krabi Province, Thailand, February 2019.

Sirachai Arunrugstichai / Group of Streaked spinefoot (Siganus javus) and Herring scads (Alepes vari) feast on a Moon jellyfish (Aurelia aurita) drifting in the current in the southern Andaman Sea of Thailand, Hat Noppharat Th...

Sirachai Arunrugstichai / Colourful Soft corals (Dendronephthya hemprichi) with reef fishes, including Golden damselfish (Amblyglyphidodon aureus) at Hin Daeng, an underwater pinnacle that is a popular dive site in the souther...

Sirachai Arunrugstichai / Colourful Soft corals (Dendronephthya hemprichi) with reef fishes, at Hin Daeng, Mu Koh Lanta National Park, Krabi Province, Thailand, February 2, 2019.

Sirachai Arunrugstichai / Golden damselfish (Amblyglyphidodon aureus) swims through a school of Sweepers (Parapriacanthus sp.) at Hin Daeng, an underwater pinnacle that is a popular dive site in the southern Andaman Sea of Tha...

Sirachai Arunrugstichai / Colourful Soft corals (Dendronephthya hemprichi) with reef fishes, at Hin Daeng, an underwater pinnacle that is a popular dive site in the southern Andaman Sea of Thailand, Mu Koh Lanta National Park,...

Sirachai Arunrugstichai / Graeff's sea cucumbers (Bohadschia graeffei) extend their bodies to spawn on top of coral bommie, releasing gametes into the flowing current at Hin Daeng Pinnacle, Mu Koh Lanta National Park, Krabi Pr...

Sirachai Arunrugstichai / Graeff's sea cucumbers (Bohadschia graeffei) extend their bodies to spawn on top of coral bommie, releasing gametes into the flowing current at Hin Daeng Pinnacle, Mu Koh Lanta National Park, Krabi Pr...

Sirachai Arunrugstichai / Large school of Bigeye snapper (Lutjanus lutjanus) swimming along the reefs, Andaman Se. Hat Noppharat Thara - Mu Koh Phi Phi National Park, Krabi Province, Thailand.

Sirachai Arunrugstichai / Large school of Bigeye snapper (Lutjanus lutjanus) swims over the reefs in the southern Andaman Sea of Thailand, Hat Noppharat Thara - Mu Koh Phi Phi National Park, Krabi Province, Thailand.

Sirachai Arunrugstichai / Fish caught in scoop net prior to unloading onto the deck of a commercial purse seiner, Andaman Sea during the night, Krabi Province, Thailand, December 2015.

Sirachai Arunrugstichai / Fishing crews aboard a Thai commercial purse seiner hauling in nets at night, Krabi Province, Thailand, December 2015 Editorial use only.

Sirachai Arunrugstichai / Commercial purse seiner hauling in the nets at first light, Andaman Sea, Thailand, Krabi Province, Thailand, December 2015.