Thetis switches on its external lights as the submersible descends.

The HOV Thetis switches on its external lights as the submersible descends beyond the depths where natural sunlight penetrates. This dive — the eighth of this cruise — was the deepest conducted during Project PHAEDRA 2006. Image courtesy of Richard Camilli, Project PHAEDRA 2006, WHOI, HCMR, Thera Foundation, NOAA.

Related Links

PHAEDRA 2006

PHAEDRA 2006: July 1 Log

NOAA Ocean Explorer Gallery

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