Photo 22765810, (c) Fabio Moretzsohn, some rights reserved (CC BY-NC), uploaded by Fabio Moretzsohn

Attribution © Fabio Moretzsohn
some rights reserved
Uploaded by fmoretzsohn fmoretzsohn
Source iNaturalist
Associated observations

Photos / Sounds

What

Blue Button (Porpita porpita)

Observer

fmoretzsohn

Date

August 3, 2018 10:23 PM CDT

Description

A small live Porpita porpita was found near Packery Channel, Padre Island. The diameter of the round float was about 12 mm, about half of the maximum diameter.

Porpita porpita is a condrophore, a colony of organisms in the phylum Cnidaria. It drifts on the surface of the sea. A close relative is Velella velella, which also has a disc with a sail. Physalia physalis is also colonial, but belongs to a different order, Siphonophorae.

The specimen was placed in a container for photos. The second photo shows the underside of the disc. All photos were taken with a cell phone (Samsung Galaxy S7 with a macro lens).

Several beached and mostly dried specimens of Blue Button were also observed. Also observed were some purple snails, Janthina globosa:
https://www.inaturalist.org/observations/15218146

Associated taxa
Sizes