Researchers from Australia have uncovered a previously unknown species of giant clam on reefs off the coast of Western Australia. The clams โ€” which come in colors of blue, green, brown, and yellow โ€” can grow to a whopping 500 lbs (230 kg). Recent DNA evidence confirmed that what was thought to be one species is actually two.

Image: The University of Queensland/E. A. Treml.

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