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Sea shells are formed by the process of bio-mineralization where living organisms produce inorganic solids. Sea shells are the protective layers of marine animals called molluscs and other sea animals.
The colour that a sea shell has is not just to make the shell look pretty. It often acts as a camouflage, hiding these small animals from the predators that hunt them. The different shell colouring and patterns is even a means by which different species communicate with each other. Impurities like metabolic waste products that are present when the shell is being formed, gives the shell a different colour. Even what these little animals eat affect the colour of their shells. The food that the mollusc eats causes the little animal to produce pigments in the mantle of the epithelium of the mollusc. If the pigment is secreted continuously it creates a spiral or radial band but if it is periodic the shell develops sports or flecks.

Shells that are red in colour usually have carotene or pterodines in them. Brown and black hues are found in shells that have melanin in them. Some shell fish can even change their colour to hide on the seabed when predators are near.



7 comments on “Day 235~366

  1. beetleypete says:

    Nice still life, FR. It brought to mind the Victorian botanical drawings, in huge bound books.
    Best wishes, Pete.

    Liked by 1 person

    1. Have never seen those Pete, thanks 😊


      1. beetleypete says:

        This sort of thing…

        Liked by 1 person

  2. Jay says:

    Pretty. Mother nature always has the best colours.

    Liked by 1 person

    1. Yes she does 😊cheers Jay.


  3. Fritz says:

    Beautiful images FR! And now I also know something about shells! It is amazing to think that those simple organisms can produce a shell out of inorganic matter and then control the colour as well. All without “thinking” – what a wonderful world.

    Liked by 1 person

    1. Nature is amazing. 😊

      Liked by 1 person

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