Twilight Zone… the Expedition

Join me and my colleagues as we embark on the Benthic Assemblages in the Twilight Zone (BATZ) expedition to characterize benthic assemblages in the mesophotic or “twilight zone” (50-200 m) using a deep-diving Phantom II remotely operated vehicle in the Gulf of Mexico August 25 – September 2nd, 2008.

Why would a leatherback turtle dive 1000m deep?

There are a few theories about why sea turtles make occasional excursions into very deep (> 1000 m) water. These involve escape from predation, thermoregulation, and prey availability. In the first two, sharks are fewer, so turtles can evade predation and “cool off” at the same time. Like ladies tanning on a balcony.