336 pictures found
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Yamasu's Nudibranch (Tenellia sp) feeding on Hydroid (Hydrozoa
© Colin Marshall / Biosphoto
© Colin Marshall / Biosphoto
Yamasu's Nudibranch (Tenellia sp) feeding on Hydroid (Hydrozoa Class), night dive, Melasti dive site, Karangasem, Bali, Indonesia
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Deep sea Amphipod (Phronima sp) in its refuge (Siphonophorae sp)
© Fabien Michenet / Biosphoto
© Fabien Michenet / Biosphoto
Deep sea Amphipod (Phronima sp) in its refuge (Siphonophorae sp) photographed at night above abyssal depths. Tahiti, French Polynesia
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A tiny Benthic Hydromedusa, with a bell size of less than one centimeter, (Ptychogastria polaris), swimming in front of an iceberg, Tasiilaq, East
© Franco Banfi / Biosphoto
© Franco Banfi / Biosphoto
A tiny Benthic Hydromedusa, with a bell size of less than one centimeter, (Ptychogastria polaris), swimming in front of an iceberg, Tasiilaq, East Greenland
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Portuguese Man O'war (Physalia physalis) in front of a reef, Tahiti, French Polynesia
© Fabien Michenet / Biosphoto
© Fabien Michenet / Biosphoto
Portuguese Man O'war (Physalia physalis) in front of a reef, Tahiti, French Polynesia
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Portuguese man o' war (Physalia physalis), Tenerife, Canary Islands.
© Sergio Hanquet / Biosphoto
© Sergio Hanquet / Biosphoto
Portuguese man o' war (Physalia physalis), Tenerife, Canary Islands.
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Harlequin ghost pipefish (Solenostomus paradoxus), Leyte, Philippines, Pacific Ocean, Southeast Asia, Asia
© J.W.Alker / imageBROKER / Biosphoto
© J.W.Alker / imageBROKER / Biosphoto
Harlequin ghost pipefish (Solenostomus paradoxus), Leyte, Philippines, Pacific Ocean, Southeast Asia, Asia
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By-the-wind sailor (Velella velella) stranded by the millions after a storm in Corsica. The velella (Velella velella) is a pelagic species of
© Jean-Philippe Delobelle / Biosphoto
© Jean-Philippe Delobelle / Biosphoto
By-the-wind sailor (Velella velella) stranded by the millions after a storm in Corsica. The velella (Velella velella) is a pelagic species of cnidarian (hydrozoan). Contrary to appearances, it is not a jellyfish. It is more closely related to the siphonophores, a colony of specialized polyps formed from a single initial polyp, of the class Hydrozoa. It belongs to the neuston, a category of surface-bound aquatic organisms.
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By-the-wind sailor (Velella velella) stranded by the millions
© Jean-Philippe Delobelle / Biosphoto
© Jean-Philippe Delobelle / Biosphoto
By-the-wind sailor (Velella velella) stranded by the millions after a storm in Corsica. The velella (Velella velella) is a pelagic species of cnidarian (hydrozoan). Contrary to appearances, it is not a jellyfish. It is more closely related to the siphonophores, a colony of specialized polyps formed from a single initial polyp, of the class Hydrozoa. It belongs to the neuston, a category of surface-bound aquatic organisms.
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By-the-wind sailor (Velella velella) stranded by the millions
© Jean-Philippe Delobelle / Biosphoto
© Jean-Philippe Delobelle / Biosphoto
By-the-wind sailor (Velella velella) stranded by the millions after a storm in Corsica. The velella (Velella velella) is a pelagic species of cnidarian (hydrozoan). Contrary to appearances, it is not a jellyfish. It is more closely related to the siphonophores, a colony of specialized polyps formed from a single initial polyp, of the class Hydrozoa. It belongs to the neuston, a category of surface-bound aquatic organisms.
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By-the-wind sailor (Velella velella) stranded by the millions after a storm in Corsica. The velella (Velella velella) is a pelagic species of
© Jean-Philippe Delobelle / Biosphoto
© Jean-Philippe Delobelle / Biosphoto
By-the-wind sailor (Velella velella) stranded by the millions after a storm in Corsica. The velella (Velella velella) is a pelagic species of cnidarian (hydrozoan). Contrary to appearances, it is not a jellyfish. It is more closely related to the siphonophores, a colony of specialized polyps formed from a single initial polyp, of the class Hydrozoa. It belongs to the neuston, a category of surface-bound aquatic organisms.
© Sergio Hanquet / Biosphoto
Hydroid (Aglaophenia acacia), Tenerife, Canary Islands.
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Ornate Stiliger Sea Slug (Stiliger ornatus) amongst Hydroids (Hydrozoa Class), Segara dive site, Karangasem, Bali, Indonesia
© Colin Marshall / Biosphoto
© Colin Marshall / Biosphoto
Ornate Stiliger Sea Slug (Stiliger ornatus) amongst Hydroids (Hydrozoa Class), Segara dive site, Karangasem, Bali, Indonesia
© Colin Marshall / Biosphoto
Red-stripe Skeleton Shrimp (Protella similis) on Hydroid (Hydrozoa Class), night dive, Seraya Beach Resort house reef, Karangasem, Bali, Indonesia
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String jellyfish (Apolemia uvaria) in blue, Saint Raphael, Var, France, Mediterranean Sea
© Cyrille Mulard / Biosphoto
© Cyrille Mulard / Biosphoto
String jellyfish (Apolemia uvaria) in blue, Saint Raphael, Var, France, Mediterranean Sea
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Pair of Aeolid Nudibranches (Eubranchus ocellatus) on Hydroid (Hydrozoa Class), Bulakan dive site, Seraya, Karangasem, Bali, Indonesia
© Colin Marshall / Biosphoto
© Colin Marshall / Biosphoto
Pair of Aeolid Nudibranches (Eubranchus ocellatus) on Hydroid (Hydrozoa Class), Bulakan dive site, Seraya, Karangasem, Bali, Indonesia
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Orange Amphipod and other Amphipods (Lysianassidae Family) on Hydroid (Hydrozoa Class), I Love Amed dive site, Amed, Karangasem Regency, Bali,
© Colin Marshall / Biosphoto
© Colin Marshall / Biosphoto
Orange Amphipod and other Amphipods (Lysianassidae Family) on Hydroid (Hydrozoa Class), I Love Amed dive site, Amed, Karangasem Regency, Bali, Indonesia, Indian Ocean
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Brown Grass Shrimp (Leander tenuicornis) on Hydroid (Hydrozoa Class), Jemeluk Bay dive site, Amed, Karangasem Regency, Bali, Indonesia, Indian Ocean
© Colin Marshall / Biosphoto
© Colin Marshall / Biosphoto
Brown Grass Shrimp (Leander tenuicornis) on Hydroid (Hydrozoa Class), Jemeluk Bay dive site, Amed, Karangasem Regency, Bali, Indonesia, Indian Ocean
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A man-of-war fish, (Nomeus gronovii), living within the deadly
© Franco Banfi / Biosphoto
© Franco Banfi / Biosphoto
A man-of-war fish, (Nomeus gronovii), living within the deadly tentacles of the The Portuguese man o' war (Physalia physalis), also known as the man-of-war, a marine hydrozoan. Although the fish seems to be 10 times more resistant to the toxin than other fish, it can be stung by the dactylozooides (large tentacles), which it actively avoids. The smaller gonozooids do not seem to sting the fish and the fish is reported to frequently "nibble" on these tentacles. Dominica, Caribbean Sea, Atlantic Ocean.
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Colony of Fire coral (Millepora sp.). Mesophotic zone (-55 m) Tahiti, French Polynesia
© Fabien Michenet / Biosphoto
© Fabien Michenet / Biosphoto
Colony of Fire coral (Millepora sp.). Mesophotic zone (-55 m) Tahiti, French Polynesia
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Immortal jellyfish (Turritopsis nutricula), Tahiti, French Polynesia
© Fabien Michenet / Biosphoto
© Fabien Michenet / Biosphoto
Immortal jellyfish (Turritopsis nutricula), Tahiti, French Polynesia
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Water mite (Hydrachnidia sp) moving near a hydra looking to catch it - city of Couffy - Loir et Cher - France
© Bruno Guénard / Biosphoto
© Bruno Guénard / Biosphoto
Water mite (Hydrachnidia sp) moving near a hydra looking to catch it - city of Couffy - Loir et Cher - France
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Fresh water Hydra (Hydra sp) awaiting microorganism for its meal - in a pond - city of Couffy - Loir et Cher - France
© Bruno Guénard / Biosphoto
© Bruno Guénard / Biosphoto
Fresh water Hydra (Hydra sp) awaiting microorganism for its meal - in a pond - city of Couffy - Loir et Cher - France
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Water mite (Hydrachnidia sp) moving near a colony of hydra looking to catch it - city of Couffy - Loir et Cher - France
© Bruno Guénard / Biosphoto
© Bruno Guénard / Biosphoto
Water mite (Hydrachnidia sp) moving near a colony of hydra looking to catch it - city of Couffy - Loir et Cher - France
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Fresh water Hydra (Hydra sp) awaiting microorganism for its meal - in a pond - city of Couffy - Loir et Cher - France
© Bruno Guénard / Biosphoto
© Bruno Guénard / Biosphoto
Fresh water Hydra (Hydra sp) awaiting microorganism for its meal - in a pond - city of Couffy - Loir et Cher - France
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Hydra from catching a daphnia to swallow it - in a pond - city of Couffy - Loir et Cher - France
© Bruno Guénard / Biosphoto
© Bruno Guénard / Biosphoto
Hydra from catching a daphnia to swallow it - in a pond - city of Couffy - Loir et Cher - France
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Daphnia which passes quickly in front of an Hydra not to be devoured - in a pond - city of Couffy - Loir et Cher - France
© Bruno Guénard / Biosphoto
© Bruno Guénard / Biosphoto
Daphnia which passes quickly in front of an Hydra not to be devoured - in a pond - city of Couffy - Loir et Cher - France
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Hydra from catching a daphnia to swallow it - in a pond - city of Couffy - Loir et Cher - France
© Bruno Guénard / Biosphoto
© Bruno Guénard / Biosphoto
Hydra from catching a daphnia to swallow it - in a pond - city of Couffy - Loir et Cher - France
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Hydra awaiting microorganism for its meal - in a pond - city of Couffy - Loir et Cher - France
© Bruno Guénard / Biosphoto
© Bruno Guénard / Biosphoto
Hydra awaiting microorganism for its meal - in a pond - city of Couffy - Loir et Cher - France
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Daphnia which passes quickly in front of an Hydra not to be devoured - in a pond - city of Couffy - Loir et Cher - France
© Bruno Guénard / Biosphoto
© Bruno Guénard / Biosphoto
Daphnia which passes quickly in front of an Hydra not to be devoured - in a pond - city of Couffy - Loir et Cher - France
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The Portuguese man o' war (Physalia physalis), also known as the man-of-war, a marine hydrozoan floating on the surface. Azores, Portugal, Atlantic
© Franco Banfi / Biosphoto
© Franco Banfi / Biosphoto
The Portuguese man o' war (Physalia physalis), also known as the man-of-war, a marine hydrozoan floating on the surface. Azores, Portugal, Atlantic Ocean.
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The Portuguese man o' war (Physalia physalis), also known as the
© Franco Banfi / Biosphoto
© Franco Banfi / Biosphoto
The Portuguese man o' war (Physalia physalis), also known as the man-of-war, a marine hydrozoan floating on the surface. Azores, Portugal, Atlantic Ocean.
© Franco Banfi / Biosphoto
Crystal jellyfish (Aequorea victoria) is a bioluminescent hydrozoan jellyfish, or hydromedusa. Trondheimsfjord, Norway, Atlantic Ocean
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Deep sea jellyfish, (Leuckartiara sp), Trondheimfjord, Norway, North Atlantic Ocean.
© Franco Banfi / Biosphoto
© Franco Banfi / Biosphoto
Deep sea jellyfish, (Leuckartiara sp), Trondheimfjord, Norway, North Atlantic Ocean.
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Amphipod (Amphipoda Order) on Hydroid (Anthoathecata Order), Ghost Bay dive site, Amed, Karangasem Regency, Bali, Indonesia, Indian Ocean
© Colin Marshall / Biosphoto
© Colin Marshall / Biosphoto
Amphipod (Amphipoda Order) on Hydroid (Anthoathecata Order), Ghost Bay dive site, Amed, Karangasem Regency, Bali, Indonesia, Indian Ocean
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By-the-wind sailor, Sea sail or purple sail (Velella velella), is a small pelagic hydrozoan that appears en masse in some periods of the year. It has
© Sergio Hanquet / Biosphoto
© Sergio Hanquet / Biosphoto
By-the-wind sailor, Sea sail or purple sail (Velella velella), is a small pelagic hydrozoan that appears en masse in some periods of the year. It has a sail that catches the wind and propulsion on the surface of the ocean. Tenerife, Canary Islands.
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By-the-wind sailor, Sea sail or purple sail (Velella velella), is a small pelagic hydrozoan that appears en masse in some periods of the year. It has
© Sergio Hanquet / Biosphoto
© Sergio Hanquet / Biosphoto
By-the-wind sailor, Sea sail or purple sail (Velella velella), is a small pelagic hydrozoan that appears en masse in some periods of the year. It has a sail that catches the wind and propulsion on the surface of the ocean. Tenerife, Canary Islands.
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Symbiosis, Mutualism: Portuguese caravel or Portuguese frigate bird (Physalia physalis) accompanied by stromateoid fish -butterfish- (Schedophilus
© Sergio Hanquet / Biosphoto
© Sergio Hanquet / Biosphoto
Symbiosis, Mutualism: Portuguese caravel or Portuguese frigate bird (Physalia physalis) accompanied by stromateoid fish -butterfish- (Schedophilus ovalis). The fish is associated with the hydrozoan during its juvenile state, as an adult it lives at depths that can reach 1000 meters. Tenerife, Canary Islands.
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Symbiosis, Mutualism: Portuguese caravel or Portuguese frigate bird (Physalia physalis) accompanied by stromateoid fish -butterfish- (Schedophilus
© Sergio Hanquet / Biosphoto
© Sergio Hanquet / Biosphoto
Symbiosis, Mutualism: Portuguese caravel or Portuguese frigate bird (Physalia physalis) accompanied by stromateoid fish -butterfish- (Schedophilus ovalis). The fish is associated with the hydrozoan during its juvenile state, as an adult it lives at depths that can reach 1000 meters. Tenerife, Canary Islands.
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Symbiosis, Mutualism: Portuguese caravel or Portuguese frigate
© Sergio Hanquet / Biosphoto
© Sergio Hanquet / Biosphoto
Symbiosis, Mutualism: Portuguese caravel or Portuguese frigate bird (Physalia physalis) accompanied by stromateoid fish -butterfish- (Nomeus gronovii). The fish is associated with the hydrozoan during its juvenile state, as an adult it lives at depths that can reach 1000 meters. Tenerife, Canary Islands.
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Portuguese man o' war (Physalia physalis). It is a stinging species. Tenerife, Canary Islands.
© Sergio Hanquet / Biosphoto
© Sergio Hanquet / Biosphoto
Portuguese man o' war (Physalia physalis). It is a stinging species. Tenerife, Canary Islands.
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Portuguese man o' war (Physalia physalis). It is a stinging species. Tenerife, Canary Islands.
© Sergio Hanquet / Biosphoto
© Sergio Hanquet / Biosphoto
Portuguese man o' war (Physalia physalis). It is a stinging species. Tenerife, Canary Islands.
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Symbiosis, Mutualism: Portuguese caravel or Portuguese frigate bird (Physalia physalis) accompanied by stromateoid fish -butterfish- (Nomeus
© Sergio Hanquet / Biosphoto
© Sergio Hanquet / Biosphoto
Symbiosis, Mutualism: Portuguese caravel or Portuguese frigate bird (Physalia physalis) accompanied by stromateoid fish -butterfish- (Nomeus gronovii). The fish is associated with the hydrozoan during its juvenile state, as an adult it lives at depths that can reach 1000 meters. Tenerife, Canary Islands.
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Forskalia tholoides. Pelagic micro organism that is part of plankton. It lives dragged by the marine currents and it is common to observe it in
© Sergio Hanquet / Biosphoto
© Sergio Hanquet / Biosphoto
Forskalia tholoides. Pelagic micro organism that is part of plankton. It lives dragged by the marine currents and it is common to observe it in spring. Marine invertebrates of the Canary Islands.
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Feather hydroid (Pennaria disticha), cnidarian. Marine invertebrates of the Canary Islands, Tenerife.
© Sergio Hanquet / Biosphoto
© Sergio Hanquet / Biosphoto
Feather hydroid (Pennaria disticha), cnidarian. Marine invertebrates of the Canary Islands, Tenerife.
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Siphonophore (Forskalia tholoides). Pelagic micro organism that is part of plankton. It lives dragged by the marine currents and it is common to
© Sergio Hanquet / Biosphoto
© Sergio Hanquet / Biosphoto
Siphonophore (Forskalia tholoides). Pelagic micro organism that is part of plankton. It lives dragged by the marine currents and it is common to observe it in spring. Marine invertebrates of the Canary Islands.
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Paired Bell Siphonophore (Agalma okeni). Pelagic micro organism that is part of plankton (unidentified species). It lives dragged by the marine
© Sergio Hanquet / Biosphoto
© Sergio Hanquet / Biosphoto
Paired Bell Siphonophore (Agalma okeni). Pelagic micro organism that is part of plankton (unidentified species). It lives dragged by the marine currents and it is common to observe it in spring. Marine invertebrates of the Canary Islands.
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Siphonophore (Forskalia tholoides). Pelagic micro organism that is part of plankton. It lives dragged by the marine currents and it is common to
© Sergio Hanquet / Biosphoto
© Sergio Hanquet / Biosphoto
Siphonophore (Forskalia tholoides). Pelagic micro organism that is part of plankton. It lives dragged by the marine currents and it is common to observe it in spring. Marine invertebrates of the Canary Islands.
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Detail of the tentacles of a Portuguese man o' war (Physalia physalis). It is a stinging species. Tenerife, Canary Islands.
© Sergio Hanquet / Biosphoto
© Sergio Hanquet / Biosphoto
Detail of the tentacles of a Portuguese man o' war (Physalia physalis). It is a stinging species. Tenerife, Canary Islands.