The Submerged T-Rex is an unmarked location in Point Lookout.
Layout
Located underwater, south-southeast of the Coastal Grotto, under a buoy. When diving under the buoy, the player character will find the skeleton of a T-Rex, accompanied by a human skeleton with a Lever-Action Rifle. Around the skeleton, two Ammunition Boxes and an Average locked safe can also be found.
Notes
The Museum of History contains another T-Rex skeleton, largely intact.
Appearances
The Submerged T-Rex appears only in the Fallout 3 add-on Point Lookout.
Gallery
Buoy on the surface above the skeleton