Complex sentence: One of the images obtained was of a large silt-covered hump on the seabed that was located 80 meters below the sea surface, which was close to the "Khukri" 's last reported position.
Split into simpler sentences: One of the images obtained was of a large silt-covered hump on the seabed. This was located 80 meters below the sea surface and close to the "Khukri" 's last reported position.