Siphonophore Collection

Portuguese man o war (Physalia physalis) Tenerife, Canary Islands

Man-of-war fish (Nomeus gronovi) living within deadly tentacles of Portuguese man o war (Physalia physalis), to whose toxin it is ten times more resistant than other fish, at sea surface. Dominica

Portuguese Man-of-War jellyfish at Santa Maria del Mar Beach, Habana del Este, Havana, La Habana Province, Cuba

Varieties of jellyfish, siphonophores and medusae. Including English man o'war, Physalia physalis
FLO4684857 Varieties of jellyfish, siphonophores and medusae. Including English man o'war, Physalia physalis, Physophora hydrostatica, sea raft jellyfish, Velella velella, and blue button

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Portuguese man o war, Physalia physalis, at sunset. The gas-filled bladder, or pneumatophore, remains at the surface, while the remainder is submerged

Blue sea slug (Glaucus atlanticus) that was washed ashore with a mass, multi-day stranding of thousands of Indo-Pacific Portuguese man-of-war (Physalia utriculus)

Siphonophore (Nanomia sp) close up of nectophores, and palpons. Gulf of Maine, Atlantic Ocean. Epipelagic species found up to 300m depth

Portuguese Man-of-War (Physalia physalis) close up of tentacles, Sargasso Sea, Bermuda

Portuguese man o war (Physalia physalis) Tenerife, Canary Islands. January

Dead Portuguese Man of War (Physalia physalis) siphonophore washed up on the rocky shore at Bedruthan Steps in North Cornwall, England. Autumn (October) 2017

Top-down view of an Indo-Pacific Portuguese Man-of-War (Physalia utriculus). This is one of many thousands that were part of a mass stranding in South Africa. Atlantic ocean

Portuguese man o war (Physalia physalis) floating on sea surface. Azores, Atlantic Ocean

Plate 7 Epibulia Siphonophorae from Kunstformen der Natur (Art Forms in Nature) illustrated by Ernst Haeckel (1834-1919)
5615752 Plate 7 Epibulia Siphonophorae from Kunstformen der Natur (Art Forms in Nature) illustrated by Ernst Haeckel (1834-1919) by Haeckel

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Portuguese man o war, Physalia physalis, with one Man-of-war fish (Nomeus gronovii). The gas-filled bladder, or pneumatophore, remains at the surface, while the remainder is submerged

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Portuguese man o war, Physalia physalis. The gas-filled bladder, or pneumatophore, remains at the surface, while the remainder is submerged

Mutualism between a Portuguese man o war (Physalia physalis) and a juvenile Imperial blackfish (Schedophilus ovalis), Tenerife, Canary Islands

Varieties of jellyfish, siphonophores and medusae. Including Portuguese man o war, Physalia physalis, Physophora hydrostatica, sea raft jellyfish, Velella velella, and blue button, Porpita porpita

Portuguese man-of-war (Physalia physalis) on the water surface, Pico, Azores, Portugal, June 2009

Portuguese man of war (Physalia physalis) Pico, Azores, Portugal, June 2009

Physalia pelagica, jellyfish model
A glass model of a jellyfish, created by Leopold and Rudolf Blaschka in the late nineteenth century and held at the Natural History Museum, London

Physophora hydrostatica, jellyfish model
A glass model of a jellyfish, created by Leopold and Rudolf Blaschka in the late nineteenth century and held at the Natural History Museum, London

Physophora hydrostatica, jellyfish
A glass model of a jellyfish, created by Leopold and Rudolf Blaschka in the late nineteenth century and held at the Natural History Museum, London

Physalia pelagica, jellyfish
A glass model of a jellyfish, created by Leopold and Rudolf Blaschka in the late nineteenth century and held at the Natural History Museum, London

Portuguese Man of War (Physalia physalis) floating on ocean surface, Azores, august

Portuguese men-of-war, artwork
Portuguese men-of-war. Artwork of a group of Portuguese men-of-war (Physalia utriculus) in the open ocean. Each Portuguese man-of-war is not one organism, instead being a colony of hydrozoan animals

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The siphonophore, a fascinating creature found in various parts of the world's oceans, shares intriguing connections with the Portuguese man o war and other marine species. In Tenerife, Canary Islands, one can witness the majestic presence of the Portuguese man o war (Physalia physalis), its vibrant colors contrasting against the blue sea. Similarly, at Santa Maria del Mar Beach in Havana, Cuba, these jellyfish grace the shores with their ethereal beauty. But it is not just their appearance that captivates us; it is also their symbiotic relationships within this ecosystem. The Man-of-war fish (Nomeus gronovi) fearlessly resides amidst the deadly tentacles of the Portuguese man o war. Astonishingly resilient to its toxin compared to other fish species, this little creature thrives in harmony with its venomous host in Dominica's Caribbean Sea. Nature never ceases to amaze us as we discover more about these intricate connections. Take for instance the Blue sea slug (Glaucus atlanticus), which predates on Indo-Pacific Portuguese man-of-war and possesses immunity to their venom. Thousands of them were stranded ashore alongside these jellyfish during a mass stranding event. A close-up view reveals even more wonders hidden within this realm: nectophores and palpons adorning Siphonophores like Nanomia sp found in Gulf of Maine's Atlantic Ocean waters. These delicate structures showcase nature's artistry up close. Occasionally tragedy strikes when life meets its end on rocky shores or during massive strandings like those witnessed off South Africa's coastlines where thousands of Indo-Pacific Portuguese Man-of-War met an unfortunate fate together. Yet amidst all these tales lies an undeniable truth – resilience and survival prevail even among such creatures deemed dangerous by humans. Floating gracefully upon Azores' Atlantic Ocean surface are Portuguese man o wars - a testament to their ability to adapt and thrive.