Dive expert David Mearns said the debris includes "a landing frame and a rear cover from the submersible".A debris field was found on the seabed near the Titanic wreck, the US Coast Guard announced.It was located by a remote-controlled underwater search vehicle (ROV) near the wreck of the Titanic.
Coast Guard - a force, usually naval, that enforces a country's maritime laws and assists vessels wrecked or in distress on or near its coasts.
Rear - at the back.
Scatter - Throw in various random directions.
Wreckage - the remains of something that has been badly damaged or destroyed.
To coalesce - To combine (elements) in a mass or whole.
Source: BBC News