Portuguese man-of-war (Physalia utriculus). Also known as a bluebottle, it is not one organism, instead being a colony of hydrozoan animals. Members o

Portuguese man-of-war (Physalia utriculus). Also known as a bluebottle, it is not one organism, instead being a colony of hydrozoan animals. Members o Stock Photo

RMID:2ADNKTP

Image details

Contributor:

Science Photo Library / Alamy Stock Photo

Image ID:

2ADNKTP

File size:

49.2 MB (1.6 MB Compressed download)

Releases:

Model - no | Property - noDo I need a release?

Dimensions:

3390 x 5071 px | 28.7 x 42.9 cm | 11.3 x 16.9 inches | 300dpi

Date taken:

3 September 2003

Photographer:

GEORGETTE DOUWMA/SCIENCE PHOTO LIBRARY

More information:

Portuguese man-of-war (Physalia utriculus). Also known as a bluebottle, it is not one organism, instead being a colony of hydrozoan animals. Members of the colony have distinct roles. One individual forms the float (upper frame), which is filled with a mixture of nitrogen and carbon monoxide. Individual called gastrozooids are responsible for digesting food and passing it to the rest of the colony. Prey is captured by dactylozooids, which comprises a large stinging tentacle. Reproduction is carried out by gonozooids. The colony is planktonic, being carried around by ocean currents. It inhabits warm waters.

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