Emanuele Biggi / Peruvian Tarantula (Pamphobeteus sp.) adult and young emerging from their communal burrow at night, Los Amigos Biological Station, Madre de Dios, Amazonia, Peru.

David Shale / Deepsea Orange ghost lobster (Decopoda, Thalassinidae) from coral seamount in the Indian Ocean, December 2011

David Hall / Soft coral ghostgoby (Pleurosicya boldinghi) swimming through Soft coral (Dendronephthya). Shrimp and benthic Comb-jellies (Ctenophora) present, all commensal. Pantar, Alor Archipelago, Indonesia.

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.

David Fleetham / Ornate ghost pipefish (Solenostomus paradoxus) and shrimp. Tulamben, Bali, Indonesia.

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

David Shale / Gravid female Glass / Ghost shrimp on Glass sponge (Hexactinellida) from coral seamount, SW Indian Ridge, Indian Ocean, December 2011

David Shale / Glass sponge (Hexactinellida) view through mesh of ostium to glass / ghost shrimps inside, from coral seamount, SW Indian Ridge, Indian Ocean, December 2011

David Shale / Deepsea Orange ghost lobster (Decopoda, Thalassinidae) from coral seamount in the Indian Ocean, December 2011

David Shale / Deepsea Orange ghost lobster (Decopoda, Thalassinidae) from coral seamount in the Indian Ocean, December 2011

Juergen Freund / Burrowing shrimp (Gonodactylus sp) well camouflaged in the sand, Northern Palawan, Philippines.

Juergen Freund / Mushroom coral ghost shrimps / Anemone shrimps (Periclimenes kororensis), always found in association with mushroom corals (Heliofungia sp.) or sea anemones. Lembeh Strait, North Sulawesi, Indonesia

Flip Nicklin / Bay Ghost Shrimp (Neotrypaea californiensis) food for Gray Whales, found in muddy pits in shallow areas where whales filter food from the mud, Clayoquot Sound, Vancouver Island, British Columbia, Cana...

Flip Nicklin / Bay Ghost Shrimp (Neotrypaea californiensis) food for Gray Whales, found in muddy pits in shallow bottom areas where whales filter food from the mud, Clayoquot Sound, Vancouver Island, British Columbi...

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

David Fleetham / Ghost shrimp / fountain shrimp / flameback coral shrimp (Stenopus pyrsonotus), Hawaii.

David Fleetham / Ghost shrimp / Fountain shrimp / Flameback coral shrimp (Stenopus pyrsonotus), Hawaii.

Juergen Freund / Cleaner shrimp {Periclimenes sp} completely transparent on coral, Philippines, Indo pacific

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

Joel Sartore / Photo Ark / Bay ghost shrimp (Neotrypaea californiensis) female, with eggs, portrait, East Bay Regional Parks Mobile Education Program. Captive, from San Francisco Bay, California, USA.

Joel Sartore / Photo Ark / Bay ghost shrimps (Neotrypaea californiensis) pair, male on left, portrait, East Bay Regional Parks Mobile Education Program. Captive, from San Francisco Bay, Californai. USA.

Joel Sartore / Photo Ark / Bay ghost shrimp (Neotrypaea californiensis) male, portrait, East Bay Regional Parks Mobile Education Program. Captive, from San Francisco Bay, California, USA.

Joel Sartore / Photo Ark / Chiragra mantis shrimp (Gonodactylus chiragra) portrait, The National Aquarium, Abu Dhabi. Captive, occurs in west Indo-Pacific Ocean.

David Fleetham / Two Ghost shrimp (Stenopus pyrsonotus) in a rock crevice, Hawaii, Pacific Ocean.

David Fleetham / Yellow boxfish (Ostracion cubicus) with ghost shrimp (Palaemonetes sp.) resting on head, Celebes Sea, Sipidan Island, Malaysia.

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.