Heart-Shaped Clams Channel Sunlight Using Fiber Optic-Like Structures, Says Study

Heart cockles, small marine bivalves from the Indian and Pacific Oceans, exhibit a unique adaptation in their shells. These structures, resembling fibre-optic cables, channel sunlight to symbiotic algae living within, facilitating photosynthesis while filtering out harmful ultraviolet rays. The algae provide essential nutrients to the clams in return.