- A marine organism, Porpita porpita, the blue option.
- A genus of bright-colored Siphonophora discovered drifting inside hotter components of the ocean. The folks are circular and disk-shaped, with a big zooid in the middle of the under side, in the middle of smaller nutritive and reproductive zooids, and by slender dactylozooids nearby the margin. The disk includes a central float, or pneumatocyst.
- The typical genus of family Porpitidæ.