David Shale / Deepsea arcturid Isopod from a coral seamount in the Indian Ocean, November 2011

Alex Mustard / A parasitic isopod attached to a Leafy Seadragon (Phycodurus eques). This species of isopod has an ornately shaped carapace to disguise it on the seadragon. Wool Bay Jetty, Edithburgh, Yorke Peninsula...

Christophe Courteau / Isopods / Sea slaters mating {Idotea granulosa} Brittany France

David Shale / Deep sea isopod. Collected from coral sea mount near Dragon vent field on SW Indian Ridge, Indian Ocean.

David Shale / Deep sea isopod. Collected from coral sea mount near Dragon vent field on SW Indian Ridge, Indian Ocean.

David Shale / Arcturid isopod on primnoid coral, from coral seamount, SW Indian Ridge, Indian Ocean, December 2011

Norbert Wu / Giant Antarctic Isopod (Glyptonotus antarcticus), Palmer Station, Antarctic Peninsula, Antarctica

Pete Oxford / Cymothoid isopod (Anilocra spp or Renocila spp) on Creolefish (Paranthias furcifer) Bonaire, Netherlands Antilles, Caribbean

David Shale / Deepsea arcturid Isopod from a coral seamount in the Indian Ocean, November 2011

David Shale / Deepsea arcturid Isopod from coral seamount in the Indian Ocean, November 2011

Doug Allan / Giant Isopod (Isopoda). South Orkney Island, Antarctica. Freeze Frame book plate page 93.

Christian Ziegler / Pill Bug (Armadillidiidae) rolled up into defensive posture, Lambir Hills National Park, Sarawak, Malaysia

Juergen Freund / Blackstriped cardinalfish (Apogon nigrofasciatus) with an isopod parasite attached to its back. North Raja Ampat, West Papua, Indonesia.

Juergen Freund / Flower cardinalfish (Apogon Fleurieu) with an isopod parasite. North Raja Ampat, West Papua, Indonesia

Stephen Dalton / Desert Isopod (Isopoda) foraging in the Negev Desert, Israel

Gerrit Vyn / Sanderling (Calidris alba) in winter pluamge feeding on an isopod. Ocean County, New Jersey, USA, January.

David Shale / Mesopelagic Parasitic Isopod {Xenuraega ptilocera} (867-1805m), Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Mesopelagic Parasitic Isopod {Xenuraega ptilocera} (867-1805m), Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / ventral view of a benthic Isopod, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Benthic Isopod, Mid-Atlantic Ridge, North Atlantic Ocean

Piotr Naskrecki / Pillbug (Armadillidium sp), Woburn, Massachusetts

Piotr Naskrecki / Pillbug (Armadillidium sp) on its back, Woburn, Massachusetts

Piotr Naskrecki / Isopod crustacean feeding on amphipods, Betty's Bay, Western Cape, South Africa

David Shale / Isopod {Saduria sabini} benthic, Barents sea, Northern Europe

David Shale / Isopod {Saduria sabini} benthic, Barents sea, Northern Europe

David Shale / Isopod {Saduria sabini} benthic, Barents sea, Northern Europe

David Shale / Isopod {Saduria sabini} benthic, Barents sea, Northern Europe

Phil Chapman / Albino cave Isopod {Paraperiscyphis platyperaeon} Mulu caves, Sarawak, Borneo

Ingo Arndt / Isopod (Idotea sp) two centimeters, vulnerable, Helgoland, Germany

Ingo Arndt / Common Pillbug (Armadillidium vulgare) pair rolled into defensive balls, Europe

Piotr Naskrecki / Woodlouse (Isopoda) portrait, Costa Rica

Pete Oxford / Common Pillbug (Armadillidium vulgare) group dried for sale in traditional medicine market, Yunnan, China

Willem Kolvoort / Gammarid isopod {Acanthogammarus victorii) endemic to Lake Baikal, Russia

Willem Kolvoort / Gammarid isopod {Eulimnogammarus sp} endemic to Lake Baikal, Russia

Willem Kolvoort / Gammarid isopod {Acanthogammarus victorii) endemic to Lake Baikal, Russia

Willem Kolvoort / Gammarid isopod {Acanthogammarus victorii) endemic to Lake Baikal, Russia

Willem Kolvoort / Gammarid isopod {Acanthogammarus victorii) endemic to Lake Baikal, Russia

Willem Kolvoort / {Pallasea cancellus} Gammarid isopod endemic to Lake Baikal, Russia

Willem Kolvoort / Gammarid isopod {Eulimnogammarus sp} endemic to Lake Baikal, Russia

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) baby, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) pair feeding on leaf, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) peeking through a leaf hole, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) pair climbing on garden plants, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) adult climbing on plant, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) pair of babies with one rolled up into a ball, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) adult portrait, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) adult rolled into protective ball, worldwide distribution, sequence 3 of 3

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) adult rolling into protective ball, worldwide distribution, sequence 1 of 3

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) adult rolling into protective ball, worldwide distribution, sequence 2 of 3

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) group of four various ages, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) adult rolled into protective ball, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) adult backside, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) feeding on leaf, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) rolling into a ball beside a toy replica, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) balancing on string, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) interacting with a toy replica, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) atop a toy replica, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) droppings, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) adult being eaten by lizard, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) adult being eaten by lizard, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) juvenile touching a young individual known as a manca that is rolling into a protective ball, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) adult portrait, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) living on the underside of leaves, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) feeding on leaf, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) pair climbing on pencils, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) five collected in a glass, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) balancing on string, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) female showing brood pouch full of young, called manca, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) juvenile touching a young individual known as a manca that is rolling into a protective ball, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) three young, called manca, recently emerged from mother's brood pouch, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) juvenile touching a young individual called a manca, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) adult with young individual called a manca in moss, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) adult, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) adult, juvenile and young before rolling into protective balls, worldwide distribution, sequence 1 of 2

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) adult, juvenile and young rolled into protective balls, worldwide distribution, sequence 2 of 2

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) mother with young called manca in brood pouch, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) mother and young called manca recently emerged from mother's brood pouch, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) mother and young called manca recently emerged from mother's brood pouch, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) mother and young called manca recently emerged from mother's brood pouch, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) mother and young called manca recently emerged from mother's brood pouch, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) three young, called manca, recently emerged from mother's brood pouch, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) adult rolled into protective ball, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) pair of adults in garden, worldwide distribution

Mitsuhiko Imamori / Common Pillbug (Armadillidium vulgare) pair of babies, one responding to touch by rolling into a protective ball, worldwide distribution

Peter Scoones / Parasitic isopod (Anilocra sp) on Creole fish (Paranthias furcifer) Bonaire, Netherlands Antilles, Caribbean photographed during making of BBC Planet Earth series 2005

David Shale / Deep sea benthic isopod - ventral view (Isopoda), deep sea Atlantic ocean

David Shale / Deep sea benthic isopod, deep sea Atlantic ocean

Kim Taylor / Opossum shrimp {Mysidacea} female with egg-filled brood pouch.

Kim Taylor / Freshwater Isopod / Slater (Asellus sp] Captive

Norbert Wu / Isopod (Natatolana sp) or (Aega sp) in sponge (Haliclona dancoi) two main components of sea floor community, Antarctica

Norbert Wu / Giant Antarctic Isopod (Glyptonotus antarcticus) in newly formed anchor ice, and Sea Stars (Odontaster validus), Antarctica

Norbert Wu / Giant Antarctic Isopod (Glyptonotus antarcticus) in newly formed anchor ice, and Sea Stars (Odontaster validus), Antarctica

Mitsuhiko Imamori / Japanese Tree Frog (Hyla japonica) eating a Common Pillbug (Armadillidium vulgare), Shiga, Japan

Doug Allan / Giant antarctic isopod {Glyptonotus antarcticus} Antarctica

Doug Allan / {Antarcturus} ispod Antarctica

Doug Allan / Antarcturus ispod on soft coral. Antarctica