1387-709 - Black-lined sapsucking slug, Romblon, Philippines.

1387-444 - A vibrant nudibranch, Phyllidia sp., feeds on sponges on a coral reef in the remote, tropical islands of Raja Ampat, Indonesia.

1387-408 - A colorful nudibranch, Phyllidia varicosa, crawls on a black sand seafloor in Alor, Indonesia.

1387-336 - A beautiful Blue Velvet Head Shield sea slug (Chelidonura varians) crawls across a sandy seafloor near Alor in the Lesser Sunda Islands of Indonesia.

832-401336 - Nudibranch Eye-spotted warty snail (Phyllidia ocellata) crawls through coral reef in search of food, Indian Ocean, Mascarene Islands, Mauritius, Africa

759-14556 - Black Headshield Slug, Chelidonura inornata, Kimbe Bay, New Britain, Papua New Guinea

759-13795 - Psychedelic Batwing Slug, Sagaminopteron psychedelicum, Tufi, Solomon Sea, Papua New Guinea

759-12407 - Pink Dorid Nudibranch, Hypselodoris bullockii, Bali, Indonesia

759-12396 - White Dorid Nudibranch, Hypselodoris sp., Bali, Indonesia

759-12397 - Pink Dorid Nudibranch, Hypselodoris bullockii, Bali, Indonesia

759-12395 - Yellow Dorid Nudibranch, Gymnodoris rubropapulosa, Bali, Indonesia

759-12345 - Dorid Nudibranch, Tambja sp., Komodo National Park, Indonesia

759-12321 - Dorid Nudibranch, Chromodoris magnifa, Komodo National Park, Indonesia

759-12320 - Black Cowry, Cypraeidae, Komodo National Park, Indonesia

759-12310 - Dorid Nudibranch, Nembrotha rutilans, Komodo National Park, Indonesia

759-12239 - Two Dorid Nudibranch, Nembrotha lineolata, Komodo National Park, Indonesia

759-12166 - Yellow Nudibranch, Notodoris minor, Florida Islands, Solomon Islands

759-11994 - Yellow Nudibranch on Blue Starfish, Notodoris minor, Florida Islands, Solomon Islands

759-11995 - Yellow Nudibranch on Blue Starfish, Notodoris minor, Florida Islands, Solomon Islands

759-11984 - White Dorid Nudibranch, Chromodoris lochi, Florida Islands, Solomon Islands

759-11983 - Green Neon Slug, Nembrotha kubaryana, Florida Islands, Solomon Islands

759-11982 - Green Neon Slug, Nembrotha kubaryana, Florida Islands, Solomon Islands

759-11615 - Dorid Nudibranch, Mexichromis multituberculata, Ambon, Moluccas, Indonesia

759-11508 - Warty Nurdibranch, Phylidiella pustulosa, Kai Islands, Moluccas, Indonesia

759-11593 - Parasitic Snail, Luetzenia asthenosomae, Ambon, Moluccas, Indonesia

759-12632 - Neon Slug Nudibranch, Thecacera picta, Ambon, Moluccas, Indonesia

759-12633 - Neon Slug Nudibranch, Nembrotha purpureolineolata, Ambon, Moluccas, Indonesia

759-11888 - Tritons trumpet, Charonia tritonis, Osprey Reef, Coral Sea, Australia

759-11358 - Neon Sea Slug, Thecacera picta, Triton Bay, West Papua, Indonesia

860-290449 - Girl removing pots placed on salad plants to protect them from slugs in summer, Moselle, France

832-393711 - Pyjama Chromodoris quadricolor (Chromodoris Quadricolor) Magnificent star snail, nudibranch, Red Sea, Aqaba, Kingdom of Jordan

860-289999 - Slug moth (Limacodidae sp) caterpillar on leaf, North Sulawesi, Indonesia

860-289962 - Blue Dragon (Glaucus atlanticus). Small slug that measures only about 2 cm and is generally associated with the Portuguese man of war (Physalia physalis), although it also usually appears in intertidal pools. Marine invertebrates of the Canary Islands, Tenerife.

860-290260 - BLUE DRAGON (Glaucus atlanticus). Small slug that measures only about 2 cm and is generally associated with the Portuguese man of war (Physalia physalis), although it also usually appears in intertidal pools. Marine invertebrates of the Canary Islands, Tenerife.

860-289963 - Blue Dragon (Glaucus atlanticus) hanging. Small slug that measures only about 2 cm and is generally associated with the Portuguese man of war (Physalia physalis), although it also usually appears in intertidal pools. Marine invertebrates of the Canary Islands, Tenerife.

860-290259 - BLUE DRAGON (Glaucus atlanticus). A small peacic slug that measures only about 2 cm and is generally associated with the Portuguese frigatebird (Physalia physalis) or the blue button (Porpita porpita) on which it feeds. They can also appear in intertidal pools. Marine invertebrates of the Canary Islands, Tenerife.

1350-2551 - Polycerid nudibranch, Nembrotha cristata, external gill detail, Puerto Galera, Mindoro, Philippines..

1350-2548 - Dorid nudibranch, Glossodoris averni, La Laguna, Puerto Galera, Mindoro, Philippines.

1350-2524 - Nudibranch, Chromodoris magnifica, Dumaguete, Negros Island, Philippines.

1350-2541 - Pleurobranch sidegill slug, Berthella martensi, mantle detail, Puerto Galera, Mindoro, Philippines.

1350-2526 - Pleurobranch slug, Pleurobranchus grandis, night, Dumaguete, Negros, Philippines.

1350-3562 - Hypselodoris sp., nudibranch portrait, Bima Bay, Sumbawa Island, Nusa Tenggara, Indonesia, Pacific Ocean

1350-3561 - Two emperor shrimp, Periclemenes imperator, catch a ride on a Ceratasoma sp., nudibranch, Bima Bay, Sumbawa Island, Nusa Tenggara, Indonesia, Pacific Ocean

1350-2535 - Nudibranch, Jorunna funebris, feeding on blue sponge, Haliclona sp., Monkey beach, Puerto Galera, Mindoro, Philippines.

1350-2509 - Nudibranch, Atlantis house reef, Dumaguete, Negros Island, Philippines.

832-389408 - Detail of Forsskal's Pleurobranch (Pleurobranchus forskalii), Backshielded Snail, Nudibranch, Detail, Pacific, Great Barrier Reef, UNESCO World Heritage, Australia, Oceania

860-287998 - (Clione limacina), known as the naked sea butterfly, sea angel is a pelagic sea slug, only few centimeters in length, swim in front of an iceberg, Tasiilaq, East Greenland

1116-39939 - An Imperial commensal shrimp (Periclimenes imperator), photographed at night on the Spanish dancer nudibranch (Hexabranchus sanguineus), that it calls home, Philippines

860-285771 - Sea slug at night in the Mediterranean sea

860-282950 - Banana slug on moss, Olympic NP USA

860-285578 - Sea Slug in reef, Mediterranean Spain

860-286168 - Sea Slug in the reef, Mediterranean

1178-11931 - Young boy holding snail

832-127898 - Fisherton Street with the spire of the United Reformed Church, and Slug and Lettuce restaurant, Salisbury, Wiltshire, England, United Kingdom, Europe

832-128024 - The Slug and Lettuce, restaurant, Fisherton Street, Salisbury, Wiltshire, England, United Kingdom, Europe

832-127905 - Fisherton Street with the spire of the United Reformed Church, and Slug and Lettuce restaurant, Salisbury, Wiltshire, England, United Kingdom, Europe

1103-362 - Lettuce sea slug (Elysia crispata), Dominica, West Indies, Caribbean, Central America

1103-105 - Sea slug (Phyllidia varicosa), Sulawesi, Indonesia, Southeast Asia, Asia

958-24 - Sea Slug Nudibranch showing detail of yellow edges and white body. UK.

973-49 - Dorid Seaslug(Chromodoris magnifica). Borneo, Malaysia (RR)

973-38 - Seasquirt (Polycarpa aurata). Borneo, Malaysia (RR)

973-48 - Dorid Seaslug(Chromodoris bullocki). Borneo, Malaysia (RR)

908-115 - Nudibranch (Ceratosoma trilobatum). Indo-Pacific (RR)

973-37 - Seasquirt (Polycarpa aurata). Borneo, Malaysia (RR)

978-132 - Pyjama Nudibranch (Cromodoris quadricolor) on fire sponge. Red Sea.

978-134 - Pyjama Nudibranch (Chromodoris quadricolor) on fire sponge. Red Sea.

978-131 - Pyjama Nudibranch (Chromodoris quadricolor) on fire sponge. Red Sea.

1004-571 - Nudibranchs (Coryphella) mating. UK

1024-197 - Jelly Antler aka. Stags-horn Fungus (Calocera viscosa), UK

970-389 - Grey Sea Slug (Aeolidia pappillosa), large light coloured nudibranch with many tentacles on back and on indistinct rock background, St Abbs, Scotland, UK North Sea

970-563 - Tubashea sea slug. Amirantes.

1004-50 - Nudibranchs (Polycera faroensis) mating. Sark, British Isles

1004-51 - Nudibranch (Polycera faroensis). Sark, British Isles

920-1387 - Pleurobranch slug (Pleurobranchus grandis) at night, Dumaguete, Negros, Philippines, Southeast Asia, Asia

920-2370 - Pleurobranch sidegill slug (Berthella martensi), Puerto Galera, Mindoro, Philippines, Southeast Asia, Asia

920-2340 - Pleurobranch sidegill slug (Berthella martensi), Puerto Galera, Mindoro, Philippines, Southeast Asia, Asia

920-2342 - Sap-sucking sea slug (Elysia ornata), Malapascua, Cebu, Philippines, Southeast Asia, Asia

920-2341 - Pleurobranch sidegill slug (Berthella martensi) detail, Puerto Galera, Mindoro, Philippines, Southeast Asia, Asia

920-1375 - Sap-sucking sea slug (Elysia ornata), Malapascua, Cebu, Philippines, Southeast Asia, Asia

911-2023 - A garden slug, United Kingdom, Europe

759-8770 - Dwarty Sea Slug (Phyllidiopsis krempfi) on coral, Gau, Lomaiviti, Fiji, Pacific

832-11852 - Sea slug, Flabellina affinis, Mediterranean Sea

832-27069 - Sand crab hole in the sand, pattern

832-11851 - Sea slug, Flabellina affinis, Mediterranean Sea

832-11846 - Sea slug, Flabellina affinis, Mediterranean Sea

832-11853 - Sea slug, Flabellina affinis, Mediterranean Sea

832-11855 - Seaslug, Flabellina affinis, Mediterranean Sea

832-11854 - Seaslug, Flabellina affinis, Mediterranean Sea

759-6697 - Swimming Flatworm, Pseudoceros spec., Short Dropoff, Micronesia, Palau

759-6698 - Swimming Flatworm, Pseudoceros spec., Short Dropoff, Micronesia, Palau

759-6192 - Mediterranean Dorid Slug, Hypselodoris elegans, Tamariu, Costa Brava, Mediterranean Sea, Spain

759-5007 - Two Lettuce sea slugs, Tridachia crispata, Saint Lucia, French West Indies, Caribbean Sea

759-5006 - Two Lettuce sea slugs, Tridachia crispata, Netherlands Antilles, Bonaire, Caribbean Sea

759-5005 - Lettuce sea slug, Tridachia crispata, Netherlands Antilles, Bonaire, Caribbean Sea

759-5004 - Lettuce sea slug, Tridachia crispata, Guadeloupe, French West Indies, Caribbean Sea

759-5003 - Lettuce sea slug, Tridachia crispata, Guadeloupe, French West Indies, Caribbean Sea

759-1867 - orange sea slug, Godiva banyulensis, Croatia, Istria, Mediterranean Sea

759-209 - nudibranch, sea slug, two sea slugs, Hypselodoris bullockii, Malaysia, Pazifik, Pacific ocean, Borneo, Lankayan