A marine biologist was unable to determine what killed the massive great white shark that washed up on a New England beach this weekend.
State biologist Greg Skomal performed a necropsy on the 1,600-pound male shark Saturday and found no signs of trauma.
The 13-foot shark was discovered early Saturday morning by fisherman Gary Severa on the border of Rhode Island and Massachusetts.
“It was pretty scary standing next to that thing…it made your adrenaline go cause he’s stone dead, but my God, it has jaws written all over it,” said Severa.

Two nearby beaches – South Shore Beach and Goosewing Beach in Rhode Island – were closed to swimmers following the discovery, which quickly drew a crowd eager to get a close-up of this deadly animal.
“People are always curious, and when you have an unusual situation like this, where a 13-foot great white shark is right there, but it can’t bite you. They want to see,” said Capt. Niko Chaprales of the Cape Cod Shark Hunters.
Throughout the New England area, it has been a real life “Shark Week” for most of the summer with numerous sightings and close calls.
Last Thursday, seven sharks were spotted off the coast of two other Cape Cod beaches, some just feet from the shore days before the start of the Labor Day weekend.
Read more: http://abcnews.go.com/blogs/headlines/2012/09/great-white-sharks-death-cause-unclear/