Austin resident and "divemaster" Aaron Grigsby explored R.M.S. Titanic's sunken sister ship recently, and caught all of the breathtaking views on camera.

Grigsby -- the first Texan to explore R.M.S. Britannic and the only American member of the DIRrebreather Britannic Expedition -- joined the group for a deep dive in the Mediterranean Sea on the 100th anniversary of her sinking. Thirty people died in 1916 aboard Britannic, which was being used as a hospital ship during World War I.

The group descended nearly 400 feet into the water to get detailed pictures and video recordings of the wreck for research.

"Questions still remain about her untimely demise, making expeditions such as this one critical, to help close chapters in history and document the ship’s condition," Grigsby said. "As an active duty veteran, this wreck also allows me to pay my respects to those who have fallen in wartime, regardless of nationality.”