pneumatophore

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pneumatophore

the bladder-like polyp of SIPHONOPHORES which enables them to float.It is usually the uppermost polyp of the CORMIDIUM.
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Amphipod females inside their nests were often in a resting state, while individuals outside their nests were found crawling on the stipe, pneumatocysts, or other blades, probably consuming some tissue as indicated by the small grazing scars commonly observed on these other sporophyte parts.
Intraosseous pneumatocyst is a rare benign condition, commonly seen in iliac bone or sacrum.
Kelp was harvested from nearby giant kelp surface canopy and consisted of entire fronds with pneumatocysts punctured to eliminate buoyancy.