APHOTOMARINE

An educational resource dedicated mainly to the photography
and diversity of marine life that can be found in coastal waters
and intertidal areas of Great Britain and Ireland by David Fenwick.

A-P-H-O-T-O Wildlife Stock Image Library
Sertularia argentea Linnaeus, 1758 or S. cupressina Linnaeus, 1758 - A sertulariid hydroid
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Sertulariid hydroid
Sertularia argentea or
S. cupressina
- hydrothecae 1

Sertulariid hydroid
Sertularia argentea or
S. cupressina
- species above with hydrotheca of a stolonial hydroid 1

Sertulariid hydroid
Sertularia argentea or
S. cupressina
- species above with hydrotheca of a stolonial hydroid 2

Sertulariid hydroid
Sertularia argentea or
S. cupressina
- habit and shape 1

Sertulariid hydroid
Sertularia argentea or
S. cupressina
- habit and shape 2

Specimen above was found cast up on the strandline after a storm at Gwithian, Cornwall, 26.02.14.

The specimen here looked a little odd, hydroid expert Dr. Peter Schuchert kindly explained why.

The specimen is a young Sertularia argentea or S. cuppressina, on which is growing another, stolonial hydroid, with hydrotheca. The stolonial hydroid looks like Campanulina pumila, but it is impossible to tell without seeing the rim of its hydrotheca. The hydrotheca of the stolonial hydroid, should not be confused with gonothecae of Sertularia argentea or S. cuppressina which are not present.

Sertularia argentea or cupressina sertulariid hydroid sertulariidae Hydrozoa Images
The main objective of this website is in furthering environmental awareness and education through the medium of photography. To increase awareness and access to the wildlife of the region and help
people find and identify it. Sometimes the difference between species is obvious but many species can only be determined by observing microscopic characteristics that are specific to any one species.