Fred Bavendam / Spotted Moray (Gymnothorax isingteena) being cleaned by Scarlet Cleaner Shrimp (Lysmata amboinensis), Bali, Indonesia

Fred Bavendam / Spotted Moray (Gymnothorax isingteena) being cleaned by Scarlet Cleaner Shrimp (Lysmata amboinensis), Bali, Indonesia

Fred Bavendam / Spotted Moray (Gymnothorax isingteena) being cleaned by Scarlet Cleaner Shrimp (Lysmata amboinensis), Bali, Indonesia

Fred Bavendam / Yellow-edged Moray (Gymnothorax flavimarginatus) being cleaned by Scarlet Cleaner Shrimp (Lysmata amboinensis), Bali, Indonesia

GEORGETTE DOUWMA / Yellow Boxfish / Cube trunkfish (Ostracion cubicus) feeding on coral while being cleaned by Bluelined cleaner wrasse (Labroides dimidiatus) Egypt, Red Sea.

GEORGETTE DOUWMA / Yellow boxfish / Cube trunkfish (Ostracion cubicus) being cleaned by Bluelined cleaner wrasse (Labroides dimidiatus) Egypt, Red Sea.

Fred Bavendam / Blue-striped Blenny (Plagiotremus rhinorhynchos) peering out of abandoned worm hole in coral, Manado, Sulawesi, Indonesia

Fred Bavendam / Clown Anemonefish (Amphiprion ocellaris) and cleaner shrimp living with a Magnificent Sea Anemone (Heteractis magnifica), Lembeh Strait, Indonesia

Fred Bavendam / Tomato Grouper (Cephalopholis sonnerati) getting cleaned by Blue-streaked Cleaner Wrasse (Labroides dimidiatus), Bali, Indonesia

Michele Westmorland / Blue and gold fusilier (Caesio teres) and Long-fin bannerfish (Heniochus acuminatus) being cleaned by Cleaner wrasse (Labroides dimidiatus) using barrel sponge as a cleaning station. Phil's Reef, Tufi...

Michele Westmorland / Fusilier (Caesio teres) being cleaned by a Cleaner wrasse (Labroides dimidiatus) using barrel sponge as a cleaning station. Phil's Reef, Tufi, Papua New Guinea

Georgette Douwma / Lyretail anthias (Pseudanthias squamipinnes) two males and one female with juvenile Cleaner wrasse (Labroides dimidiatus) on coral. Rinca, Indonesia.

GEORGETTE DOUWMA / Redtoothed triggerfish (Odonus niger) with Cleaner wrasses (Labroides dimidiatus). Bali, Indonesia.

GEORGETTE DOUWMA / Bicolor cleaner wrasse (Labroides bicolor) on the back of a moray eel. Andaman Sea, Thailand.

GEORGETTE DOUWMA / Slingjaw wrasse (Epibulus insidiator) being cleaned by two Bluestreak cleaner wrasse (Labroides dimidiatus). Andaman Sea, Thailand

GEORGETTE DOUWMA / Elongate surgeonfish (Acanthurus mata) being cleaned by a pair of Cleaner wrasse (Lutjanus dimidiatus). Bali, Indonesia

GEORGETTE DOUWMA / Giant sweetlips (Plectorhinchus albovitatus) with Cleaner wrasse (Labroides dimidiatus) Papua New Guinea

GEORGETTE DOUWMA / Two Elongate surgeonfish (Acanthurus mata) with Bluestreak cleaner wrasses, showing the colour changes the fish can go through during cleaning. Sweepers in background. Andaman Sea, Thailand.

GEORGETTE DOUWMA / Oriental sweetlips (Plectorhinchus vittatus) with a Bluestreak cleaner wrasse (Labroides dimidiatus). Andaman Sea, Thailand

GEORGETTE DOUWMA / Cleaner shrimp (Lysmata amboinensis) on diver's mouth to clean teeth. Bali, Indonesia

GEORGETTE DOUWMA / Map pufferfish (Arothron mappa) on reef with Cleaner wrasse (Labroides dimidiatus). Papua New Guinea

Chris Newbert / Snake Eel (Callechelys sp) with cleaner shrimp on nose, Papua New Guinea

GEORGETTE DOUWMA / Elongate surgeonfish (Acanthurus mata) at cleaning station with a Bluestreak cleaner wrasse (Labroides dimidiatus). Andaman Sea, Thailand

GEORGETTE DOUWMA / Bluestreak cleaner wrasse (Labroides dimidiatus) cleaning a diver's ear. Andaman Sea, Thailand

GEORGETTE DOUWMA / Bluestreak cleaner wrasse (Labroides dimidiatus) cleaning diver's ear. Andaman Sea, Thailand

Jane Burton / Cleaner wrasse {Labroides dimidiatus} cleaning Flame dwarf angelfish {Centropyge loriculus} captive

Jane Burton / Flame dwarf angelfish {Centropyge loriculus} in invitation display to Cleaner wrasse {Labroides dimidiatus} captive, from Hawaii

Jane Burton / Electric blue damselfish {Pomacentrus caeruleus} and three Cleaner shrimps {Hippolysmata grabhami} captive,

Jane Burton / Flame dwarf angelfish {Centropyge loriculus} in invitation display to Cleaner wrasse {Labroides dimidiatus} captive, from Hawaii

Doug Perrine / Tomato grouper / cod {Cephalopholis sonnerati} being cleaned by Humback cleaner shrimp {Lysimata amboiensis} Bali, Indonesia

GEORGETTE DOUWMA / Yellowfin goatfish (Mulloidichthys vanicolensis) lying on sand next to Cerianthid anemone where cleaner shrimps have set up cleaning station. Vava'u, Tonga, Indo-Pacific

GEORGETTE DOUWMA / Redtoothed triggerfish (Odonus niger) with Cleaner wrasse (Labroides dimidiatus). Bali, Indonesia.

GEORGETTE DOUWMA / Honeycomb moray eel (Gymnothorax favagineus) with mouth open, surrounded by cleaner shrimps, Bali, Indonesia

GEORGETTE DOUWMA / Singular bannerfish (Heniochus singularis), pair with Cleaner wrasse (Labroides dimidiatus). Bali, Indonesia

GEORGETTE DOUWMA / Titan triggerfish (Balestoides viridescence) with Cleaner wrasse (Labroides dimidiates), Bali, Indonesia

GEORGETTE DOUWMA / Yellow edged / margined moray eel (Gymnothorax flavimarginatus) being cleaned by a Hump-back / Scarlet cleaner shrimp (Lysmata amboinenis) with Durban hinge-beak shrimps (Rhynchocinetes durbanensis) o...

Georgette Douwma / Reticulated dascyllus (Dascyllus reticulatus) with Cleaner wrasse (Labroides dimidiatus), Rinca, Indonesia

Scott Leslie / Spotted Cleaner Shrimp (Periclimenes yucatanicus) on anemone, Bonaire, Caribbean

Fred Bavendam / Spotted Moray (Gymnothorax isingteena) beeing cleaned by Scarlet Cleaner Shrimp (Lysmata amboinensis), Bali, Indonesia

GEORGETTE DOUWMA / Blacktongue unicornfish (Naso hexacanthus) being cleaned by juvenile Cleaner wrasse (Labroides dimidiatus) Red Sea, Egypt.

GEORGETTE DOUWMA / Bigeye emperor {Monotaxis grandoculis} being cleaned by Cleaner wrasse {Labroides dimidiatus}, Red Sea, Egypt

GEORGETTE DOUWMA / Spangled emperor {Lethrinus nebulosus} being cleaned by Cleaner wrasse {Labroides dimidiatus}, Red Sea, Egypt

Juergen Freund / Grey faced moray eel and cleaner fish {Siderea thyrsoidea} Indo-pacific

Norbert Wu / Blue-streaked Cleaner Wrasse (Labroides dimidiatus) cleaning Guineafowl Pufferfish (Arothron meleagris), Raja Ampat Islands, Indonesia

Doug Perrine / Blue chromis damselfish (Chromis cyanea) being cleaned by Cleaner goby (Gobiosoma sp), Lighthouse Reef Atoll, Caribbean Sea, Belize.

Doug Perrine / Green sea turtle (Chelonia mydas ) being cleaned by herbivorous cleaner fish species Yellow tangs (Zebrasoma flavescens) and Gold-ring surgeonfish (Ctenochaetus strigosus) that graze algae off of turt...

GEORGETTE DOUWMA / Blacktongue unicornfish {Naso hexacanthus} being cleaned by Cleaner wrasse, Red Sea

GEORGETTE DOUWMA / Parrotfish {Scaridae} with Cleaner wrasse {Labroides sp} Thailand

Juergen Freund / Cleaner shrimp (Periclimenes pedersoni) on skin of Grouper fish (Cephalopholis fulvus)

Nature Production / White-Banded / Scarlet Skunk Cleaner Shrimp {Lysmata amboinensis} cleaning Bicolor anthias {Pseudanthias bicolor} Okinawa, Japan

Nature Production / Blue-Streak / Striped Cleaner Wrasse {Labroides dimidiatus} cleaning in the mouth of Oriental Sweetlips {Plectorhinchus orientalis} Maldives

Jane Burton / Black Labrador pup destroying boot cleaner.

Brent Hedges / Scarlet / Pacific Cleaner Shrimp (Lysmata amboinensis) cleaning mouth of Giant Moray eel (Gymnothorax javanicus) Papua New Guinea

Fred Bavendam / Unicornfish (Naso vlamingii) being cleaned by a Blue-streaked Cleaner Wrasse (Labroides dimidiatus), Bali, Indonesia

Doug Perrine / Coral hind grouper {Cephalopholis miniata}, note Cleaner wrasse just visible under gill, Similan Is, Thailand

GEORGETTE DOUWMA / False cleaner blenny {Aspidontus taeniatus}, Bunaken, Sulawesi, Indonesia

GEORGETTE DOUWMA / False cleaner blenny {Aspidontus taeniatus}, Bunaken, Sulawesi, Indonesia

GEORGETTE DOUWMA / False cleaner blenny {Aspidontus taeniatus}, Bunaken, Sulawesi, Indonesia

GEORGETTE DOUWMA / False cleaner blenny {Aspidontus taeniatus}, Bunaken, Sulawesi, Indonesia

Doug Perrine / Spotted cleaner shrimp {Periclimenes yucatanicus} in Giant sea anemone {Condylactis gigantea} Dominica, Caribbean

Doug Perrine / Yellow edged moray eel {Gymnothorax flavimarginatus} being cleaned by Humpback cleaner shrimp {Lysmata amboinensis} Mabul, Borneo, Malaysia

Doug Perrine / Nassau grouper {Epinephelus striatus} at cleaning station, Cleaner shrimp {Periclemenes sp} removes parasites from skin, Cayman Islands, Caribbean

Doug Perrine / Giant moray eel {Gymnothorax javanicus} being cleaned by Humpback cleaner shrimp {Lysmata amboinensis} Sipadan, Sabah, Borneo, Malaysia

GEORGETTE DOUWMA / Blackspotted puffer {Arothron nigropunctatus} with Cleaner wrasse, Andaman Sea, Thailand.

Brent Hedges / Giant moray eel {Gymnothorax javanicus} with Cleaner fish, Andaman Sea, Indo-pacific

Juergen Freund / Potato grouper {Epinephelus tukula} with mouth being cleaned by Cleaner wrasse {Labroides dimidiatus} Great Barrier Reef & Coral Sea, Australia

Doug Perrine / Green moray eel {Gymnothorax funebris} + Cleaner goby {Gobiosoma oceanops} Belize

GEORGETTE DOUWMA / Moray eel {Gymnothorax sp} with juvenile Cleaner wrasse, Maldives

GEORGETTE DOUWMA / Titan triggerfish {Balistoides viridescens} and Cleaner wrasse, Andaman Sea,

Doug Perrine / Yellow edged moray eel {Gymnothorax flavimarginatus} having mouth cleaned by Humpback cleaner shrimp {Lysmata amboinensis} Sabah Borneo (Non-ex).

Fred Bavendam / Scarlet Cleaner Shrimp (Lysmata amboinensis) working on a Tomato Grouper (Cephalopholis sonnerati), Milne Bay, Papua New Guinea

Chris Newbert / Blue-striped Blenny (Plagiotremus rhinorhynchos) in its burrow, Solomon Islands

Chris Newbert / Scarlet Cleaner Shrimp (Lysmata amboinensis) cleaning a Moray Eel (Gymnothorax ocellatus) 80 feet deep, Solomon Islands

Chris Newbert / Blue-streaked Cleaner Wrasse (Labroides dimidiatus) cleaning gills of Map Puffer (Arothron mappa) 80 feet deep, Solomon Islands

Chris Newbert / Giant Moray Eel (Gymnothorax javanicus) being cleaned by a Cleaner Shrimp (Urocaridella sp), Red Sea, Egypt

Hiroya Minakuchi / Yellow-edged Moray (Gymnothorax flavimarginatus) being cleaned by Scarlet Cleaner Shrimp (Lysmata amboinensis), Sulu Sea, Borneo, Malaysia

Flip Nicklin / Moray Eel (Gymnothorax mordax) with cleaner shrimp, California

Fred Bavendam / Scarlet Cleaner Shrimp (Lysmata amboinensis) working on a Tomato Grouper (Cephalopholis sonnerati), Bali, Indonesia

Fred Bavendam / Eyepatch Butterflyfish (Chaetodon adiergastos) lining up for the services of a Blue-streaked Cleaner Wrasse (Labroides dimidiatus), Bali, Indonesia

Fred Bavendam / Spotted Cleaner Shrimp (Periclimenes yucatanicus) on Sea Anemone, Bonaire

Fred Bavendam / Blue-striped Blenny (Plagiotremus rhinorhynchos), Queensland, Australia

Fred Bavendam / Blue-streaked Cleaner Wrasse (Labroides dimidiatus) working on a Giant Moray Eel (Gymnothorax javanicus), Red Sea, Egypt

GEORGETTE DOUWMA / Map pufferfish + Cleaner fish {Arothron mappa} Andaman sea

Juergen Freund / Emperor cleaner shrimp {Periclimenes imperator / Zenopontonia rex} on sea cucumber. Indo Pacific

Martha Holmes / Titan triggerfish {Balistoides viridescens} at cleaning station Red Sea

GEORGETTE DOUWMA / Map pufferfish + Cleaner fish {Arothron mappa} Andaman sea

Doug Perrine / Spotted cleaner shrimp in symbiotic relationship with anemone {Periclimenes yucatanicus} Bonaire, Caribbean (Non-ex).

Doug Perrine / Oriental sweetlips {Plectorhinchus orientalis / vittatus} being cleaned by cleaner wrasses {Labroides dimidiatus} Maldives (Non-ex).

Doug Perrine / Scarlet cleaner shrimp {Lysmata amboinensis} in mouth of Tomato grouper {Cephalopholis sonnerati} Sabah Borneo (Non-ex).

Doug Perrine / Oriental sweetlips {Plectorhinchus orientalis} being cleaned by cleaner wrasse fish, Maldives (Non-ex).

Doug Perrine / Grey faced moray eel {Siderea thrysoidea} cleaned by Humpback cleaner shrimp {Lysmata amboidensis} Bali Indonesia (Non-ex).

Doug Perrine / Cleaner shrimp {Periclimenes sp} on Giant anemone {Condylactis gigantea} Bahamas, Caribbean (Non-ex).

Jeff Rotman / Nurse shark (Ginglymostoma cirratum) with symbiotic Remora cleaner fish, Bahamas

Jeff Rotman / Scarlet cleaner shrimp {Lysmata amboinensis} Red Sea

Juergen Freund / Nassau grouper with symbiotic Cleaner wrasse, Caribbean Sea.

GEORGETTE DOUWMA / Cleaner wrasse {Labroides dimidiatus} cleaning Rosy goatfish {Parupeneus rugescens} Red Sea