Solvin Zankl / Portuguese man-of-war (Physalia physalis) colony, underwater Sargasso Sea, Bermuda

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

Michael Pitts,Michael Pitts / Portuquese man o' war (Physalia physalis) colonial siphophore, Tobago, Caribbean.

Solvin Zankl / Deepsea Siphonphore {Nectalia sp}, Atlantic ocean

David Fleetham / Siphonophore (Prya dubia) feeding by casting outgossamer tentacles to snare plankton at night, off the Kona Coast of Big Island, Hawaii.

David Shale / Siphonophore (Namonia) close up of anterior end of a colony with typical pneumatophore with red pigmented apex, From the Gulf of Maine, Atlantic Ocean. Epipelagic species found up to 300m depth.

David Shale / Siphonophore (Nanomia cara) close up, from the Gulf of Maine, Atlantic Ocean. Epipelagic species found up to 300m depth.

David Shale / Siphonophore (Nanomia) close up of nectophores, and cormidium Gulf of Maine, Atlantic Ocean. Epipelagic species found up to 300m depth.

Pascal Kobeh / A siphonophore (Siphonophorae or Siphonophora) in open water at night, Palau, Philippine Sea

Solvin Zankl / Calycophoran siphonophore (Chelophyes appendiculata) feeding on Copepod (Gaussia princeps) deep sea species from Atlantic Ocean off Cape Verde. Captive.

Solvin Zankl / Siphonophore (Physophora hydrostatica) deep sea species from, Atlantic Ocean off Cape Verde. Captive.

Solvin Zankl / Siphonophore (Physophora hydrostatica), Atlantic Ocean off Cape Verde. Captive.

Solvin Zankl / Portuguese man-of-war (Physalia physalis) colony, Sargasso Sea, Bermuda.

Solvin Zankl / Portuguese man-of-war.(Physalia physalis) colony on the Sargasso Sea, Bermuda.

Solvin Zankl / Siphonophore (Physophora hydrostatica)from Atlantic Ocean, North West Norway. Controlled conditions,

David Fleetham / Stinging cells trail behind the bell of this cystonect siphonophore (Rhizophysa sp.), Hawaii.

Nigel Cattlin / Stinging nettle aphid (Microlophium carnosum) winged alate on a Stinging nettle (Urtica dioica) leaf, June, Devon

Nigel Cattlin / Stinging nettle aphids (Microlophium carnosum) apterous female and immatures on a Stinging nettle (Urtica dioica) leaf, Devon, June

Nigel Cattlin / Stinging nettle aphids (Microlophium carnosum) infestation on a Stinging nettle (Urtica dioica) leaf, Devon, June