Thetis floats over top of a shipwreck site thought to be about 200 years old. Sections encrusted with marine life provide clues to the chemical make-up of the ship’s cannons (perhaps iron) as they act as a mineral source for marine life. Resting in the photic zone, marine life has flourished over the wreck site and recycled most of the materials, leaving only ceramics and large metal objects remaining. Image courtesy of Richard Camilli, Project PHAEDRA 2006, WHOI, HCMR, Thera Foundation, NOAA.
