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
Heteranomia squamula (Linnaeus, 1758) - Prickly saddle oyster
Prickly saddle oyster
Heteranomia squamula
- live animal dorsal view 1

Prickly saddle oyster
Heteranomia squamula
- live animal ventral view 1

Specimen above was found on a Laminaria stipe at Battery Rocks, Penzance, Cornwall. 20.09.20.

Prickly saddle oyster
Heteranomia squamula
- live animal dorsal view 2

Prickly saddle oyster
Heteranomia squamula
- live animal ventral view 2

Prickly saddle oyster
Heteranomia squamula
- live on mussel 1

Specimens above found at Spit Point, Par, near St. Austell, Cornwall. 16.04.09.

Prickly saddle oyster
Heteranomia squamula
- live animal dorsal view 3

Prickly saddle oyster
Heteranomia squamula
- live animal ventral view 3

Specimens above found on the inside of a fish box at Long Rock, Penzance, Cornwall. 20.11.10.

Prickly saddle oyster
Heteranomia squamula
- on flotsam 1

Prickly saddle oyster
Heteranomia squamula
- 2-3mm juvenile specimens 1

Prickly saddle oyster
Heteranomia squamula
- muscle scar 9mm shell 1

Prickly saddle oyster
Heteranomia squamula
- muscle scar 9mm shell 2

Specimens above found on a plastic part of a large ocean buoy at Marazion, Penzance, Cornwall. 07.12.15.

Species may be found attached to kelp holdfasts and to flotsam that has drifted across the Atlantic. May also occur with Hiatella arctica, Wrinkled rock borer, on flotsam and kelp holdfasts.

Large specimens that appear to be this species, which may or may not be found on plastic flotsam, may be Pododesmus striata.

APHOTOMARINE supports open source data recording and sharing for the benefit of wildlife, recorders, research, science and education. The project recommends the following websites and works with the following bodies and organisations.

Conchological Society of Great Britain and Ireland

The Conchological Society of Great Britain and Ireland
Helping to understand, identify, record, and conserve molluscs.

Marine Biological Association MBA

The Marine Biological Association or MBA, based in Plymouth, is one of the world’s longest-running societies dedicated to promoting research into our oceans and the life they support. Since 1884 the MBA has been providing a unified, clear, independent voice on behalf of the marine biological community.It has a growing membership in over 40 countries.

NBN National Biodiversity Network

The National Biodiversity Network or NBN is a charity that supports open source data sharing and recording supporting conservation, science and education. "Why do recorders need open source?". Simply because it supports the core values of wildlife recording and the free use of records and data over a very wide network that includes partners like the Natural History Museum.

The taxonomy used here is based on that of the following database, which is also used by the MBA, NHM and the NBN.

World Register of Marine Species or WoRMS

The World Register of Marine Species or WoRMS.

Heteranomia squamula Prickly Saddle Oyster
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.