The mantle (soft tissue) within the shell is brightly coloured brown, blue and/or green. This is due to the microscopic algae known as zooxanthellae living inside the tissues which photosynthesise (manufacture food) from sunlight and the waste metabolic products of the clam.
The mantle (soft tissue) within the shell is brightly coloured brown, blue and/or green. This is due to the microscopic algae known as zooxanthellae living inside the tissues which photosynthesise (manufacture food) from sunlight and the waste metabolic products of the clam.