Alex Mustard,Alex Mustard / A portrait of a small Candy stripe shrimp (Lebbeus grandimanus) in front of its host pink anemone (out of focus because of the magnification). Browning Wall, Browning Pass, Port Hardy, Vancouver Islan...

Sergio Hanquet / Red-backed cleaner shrimp (Lysmata grabhami) head, close up. Tenerife, Canary Islands.

Franco Banfi / Two Ambonian / Squat shrimps (Thor amboinensis) on coral, Lighthouse Reef, Cabilao Island, Bohol, Central Visayas, Philippines, Pacific Ocean.

Tony Wu / Giant moray eel (Gymnothorax javanicus) being cleaned by Scarlet cleaner shrimp (Lysmata amboinensis) Ambon, Indonesia

Pascal Kobeh / Two Paron shrimps (Gelastocaris paronae) on a sponge, Manado, Indonesia. Sulawesi Sea.

Michele Westmorland / Moray Eel (Gymnothorax prasinus) with Rock shrimps (Lysmata sp) in urchins and sponge encrusted rocks. Galapagos Islands.

Franco Banfi / Marble shrimp (Saron sp.) Raja Ampat, Irian Jaya, West Papua, Indonesia, Pacific Ocean

Alex Mustard / Three White-eyed moray eels (Gymnothorax thyrsoideus) and Palechin moray eel (Gymnothorax herrei) with Cleaner shrimps (Decapoda) resting in a hollow log on seabed, Bitung, North Sulawesi, Indonesia,...

David Fleetham / Two Scarlet cleaner shrimps (Lysmata amboinensis) inspecting a Yellowmargin moray eel (Gymnothorax flavimarginatus) off Sabang Beach, Mindoro, Philippines, Pacific Ocean.

David Hall / Crimson anemone (Cribrinopsis fernaldi) with Candy-striped shrimps (Lebbeus grandimanus) living symbiotically. Browning Pass, Queen Charlotte Strait, British Columbia, Canada. September.