Psychedelic Clams

Psychedelic Clam - Photograph by Laura Lecce
Psychedelic Clam – Photograph by Laura Lecce

This gorgeous and very large clam was photographed while swimming off a beach on Fitzroy Island, Australia. This beautiful island is situated just off the coast of Queensland about a 45 minute boat ride from Cairns. It is surrounded by coral reef that is part of the Great Barrier Reef Marine Park, where you can see many different corals, clams, fish and even turtles. Clams are incredibly fascinating creatures especially in regards to their life cycle and reproductive habits. They are born male and remain so for the first few years of life and produce sperm to reproduce. Once mature they also develop ovaries and produce eggs making them hermaphrodites. To maintain genetic diversity, clams living in the same area will spawn at the same time. Clam spawning, along with many corals takes place when sea temperatures rise and the moon is at the correct phase. Once spawning has begun they simultaneously release reproductive pheromones telling other nearby clams to spawn. First they release sperm which gets moved away by the current (hopefully to meet another clams eggs), and then they release eggs (to hopefully meet another clams sperm). After fertilization takes place the baby clam passes through a mobile larval stage (which sadly many do not survive), before finally settling on a permanent home and growing into the beautiful, colorful clams that we see amongst the corals.

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