Alex Mustard / 2020VISION / Pair of Skeleton shrimps (Caprella linearis) male on left, living on lightbulb tunicates. Bard Cave, Bressay, Shetland Islands, Scotland, UK, June

Alex Mustard / 2020VISION / Skeleton shrimp (Caprella linearis) living within the polyps of Dead man's fingers soft coral. Bard Cave, Bressay, Shetland Islands, Scotland, UK, June

Wild Wonders of Europe / Lundgren / Skeleton shrimp (Caprellidea sp) on a hydroid, Saltstraumen, Bod, Norway, October 2008

Tony Wu / Skeleton shrimp (Caprella bispinosa) female and babies on Sea lettuce. Venomous spikes on female used to protect young. Hokkaido, Japan. May.

Franco Banfi / Skeleton / Ghost shrimp (Caprellidae). Tasiilaq, East Greenland. April.

David Fleetham / Auger shell (Terebridae) eye to eye with Skeleton shrimp (Caprellidae sp), close-up. Blurry areas in the background where freshwater is percolating up through sand and mixing with saltwater. Philippin...

David Fleetham / Skeleton shrimp (Caprellidae sp), group on Sponge at night, close-up. Dumaguete, Philippines.

David Fleetham / Triton sea snail (Colubraria sp) eye to eye with Skeleton shrimp (Caprellidae sp) on sandy sea floor, close-up. Dumaguete, Philippines, Asia.

David Fleetham / Skeleton shrimp (Caprellidae sp) on sea floor. Blurry areas where freshwater is percolating up through sand and mixing with saltwater. Dumaguete, Philippines

David Fleetham / Calf cowry (Lyncina vitellus) with several Skeleton shrimp (Caprellidae sp) covering sand in front. Dumaguete, Philippines.

David Fleetham / Ringed olive snail (Oliva annulata) surrounded at night by several Skeleton shrimp (Caprellidae sp.), close-up. Dumaguete, Philippines.

Magnus Lundgren / Wild Wonders of China / Skeleton shrimps (Caprellidae) camouflaged on hydroid, Po Bin Chau, Sai kung, Hong Kong, China.

Olga Kamenskaya / Skeleton shrimp (Caprella septentrionalis) mating Novaya Zemlya, Russian Arctic, July

Olga Kamenskaya / Skeleton shrimp (Caprella septentrionalis) mating Novaya Zemlya, Russian Arctic, July

Alex Mustard / Pink skeleton shrimp (Caprella sp.) portrait in red algae. Thistilfjord, Thorshofn, north east Iceland. North Atlantic Ocean.

Alex Mustard / 2020VISION / Female Ghost shrimp (Caprella linearis) amongst the branches of Stinging hydroids (Aglaophenia cupressina), Loch Carron, Ross and Cromarty, Scotland, UK, April

Alex Mustard / 2020VISION / Group of Skeleton shrimps (Caprella sp) a large male and two pregnant females, feeding on plankton while standing on Dead man's fingers soft coral (Alcyonium digitatum). Wreck of the MV Lunokhods, She...

Juergen Freund / Close up of Skeleton shrimps (Caprella sp) covering fan coral, Misool, Raja Ampat, West Papua, Indonesia.

Juergen Freund / Skeleton shrimps (Caprella sp) cover a fan coral, Misool, Raja Ampat, West Papua, Indonesia.

Juergen Freund / Close-up of Skeleton shrimps (Caprella sp.) congregating all over a fan coral. Misool, Raja Ampat, West Papua, Indonesia

Wild Wonders of Europe / Lundgren / Nudibranch (Tambja ceutae) with a Skeleton shrimp (Caprellidae) riding on its back, Pico & Faial, Azores, Portugal, July 2009

Wild Wonders of Europe / Lundgren / Skeleton shrimp (Caprellidea sp) on a hydroid on Sea-mat / Lacy crust bryozoan (Membranipora membranacea), Saltstraumen, Bodö, Norway, October 2008

Wild Wonders of Europe / Lundgren / Skeleton shrimp (Caprellidea sp) on Sea-mat / Lacy crust bryozoan (Membranipora membranacea)Saltstraumen, Bodö, Norway, October 2008

Wild Wonders of Europe / Lundgren / Skeleton shrimp (Caprellidea sp) waiting for food, Saltstraumen, Bodö, Norway, October 2008

Wild Wonders of Europe / Lundgren / Skeleton shrimp (Caprellidea sp) on a hydroid on Sea-mat / Lacy crust bryozoan (Membranipora membranacea) Saltstraumen, Bodö, Norway, October 2008

Wild Wonders of Europe / Lundgren / Skeleton shrimps (Caprellidea sp) Saltstraumen, Bodö, Norway, October 2008

Wild Wonders of Europe / Lundgren / Long-spined sea scorpion (Taurulus bubalis) with a skeleton shrimp (Caprellidae) on its cheek, Saltstraumen, Bodö, Norway, October 2008

Wild Wonders of Europe / Lundgren / Two skeleton shrimps (Caprellidea sp) on Sea-mat / Lacy crust bryozoan (Membranipora membranacea)Saltstraumen, Bodö, Norway, October 2008

Wild Wonders of Europe / Lundgren / Skeleton shrimp (Caprellidea sp) on a hydroid on Sea-mat / Lacy crust bryozoan (Membranipora membranacea) Saltstraumen, Bodö, Norway, October 2008 Wild Wonders kids book.

Nature Production / Skeleton shrimp {Caprella scaura} captive, Japan

SINCLAIR STAMMERS / Ghost shrimp {Caprella linearis}, English Channel, UK.

Gary Bell/ Oceanwide / Amphipod (Caprella sp) on jellyfish hydroid, Anilao, Philippines

Joel Sartore / Photo Ark / California skeleton shrimp (Caprella californica) portrait, East Bay Regional Parks Mobile Education Program. Captive, from San Francisco Bay, California, USA.

Tony Wu / Northern pygmy squid (Idiosepius paradoxus) wrapped around a skeleton shrimp (Caprellidae) prey, Yamaguchi Prefecture, Japan.

Tony Wu / Northern pygmy squid (Idiosepius paradoxus) consuming a skeleton shrimp (Caprellidae), Yamaguchi Prefecture, Japan.

Tony Wu / Hairy frogfish (Antennarius striatus) male opening mouth, illicium / rod and esca / lure folded back on top of head. Skeleton shrimp (Caprellidae) parasites on fish's body. Ariake Sea, Japan.

Tony Wu / Hairy frogfish (Antennarius striatus) female on reef, Skeleton shrimp (Caprellidae) parasites on fish's body. Ariake Sea, Japan.

Tony Wu / Hairy frogfish (Antennarius striatus) male with esca / lure extended on illicium / rod to entice prey. Skeleton shrimp (Caprellidae) parasites on fish's body. Ariake Sea, Japan.

David Hall / Red-gilled aeolid nudibranch (Flabellina triophina) moving among Skeleton shrimp (Caprella sp.) The nudibranch does not prey upon amphipods; it eats stinging hydroids. Gambier Bay, Admiralty Island, A...

David Hall / Clown nudibranch (Triopha catalinae) grazing on Lace bryozoans (Membranipora serrilamella) surrounded by several caprellid amphipods, also known as 'skeleton shrimps' (Caprella sp.); Gambier B...

Pascal Kobeh / Skeleton shrimp (Caprella septentrionalis) on kelp Russia. White Sea.