Monthly Archives: April 2013

Black Oyster Shells on the Beach 3

A most unusual form of very thick-shelled burial-blackened oyster shell right valve. It looks almost like a set of nesting bowls. It is clearly an old shell – it lived a long time – but it failed to grow much … Continue reading

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Black Oyster Shells on the Beach 2

These Black Oyster Postings are about the multiplicity of variations in shells of the British Native Oyster, also known as the Flat or European Oyster, Ostrea edulis Linnaeus. Sometimes, as in this Posting, the shells are photographed just as found, … Continue reading

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Black Oyster Shells on the Beach 1

An example of a black-stained oyster shell, Native or Flat European Oyster (Ostrea edulis Linnaeus), washed ashore at Rhossili Bay on the Gower Peninsula. The colour is due to prolonged burial in anoxic sediments. For more information about this phenomenon … Continue reading

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Fossil Oysters 1

This Post features one of many fossil oysters that I have picked up on the beach over the years because they were in some way unusual and because of my interest in the variation in oyster shells from both present … Continue reading

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Worm Tubes on Oyster Shells 1 – Calcareous Tubes

Organisms that live on other creatures and inanimate objects are known as epibionts. Epibionts include various kinds of marine worms. Some worms attach to objects like seashells, while the mollusc is still alive and also when the shell is empty, … Continue reading

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Holes in Old Oyster Shells 1 – Sponge Borings

An explanation of how these holes are made in shells and in stones can be found in the blog postings Sponge borings in Flat Oyster Shells and Pebbles with holes made by boring sponges in Jessica’s Nature Blog. COPYRIGHT JESSICA … Continue reading

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