It's large -- 197 feet in diameter -- and it's in about 275 feet of water. Leading to (or from) it is a churned-up track on the sea floor of about 1,600 feet.
So i take it they are presuming that whatever it is crashed on the sea floor and slid 1,600 feet, if its 197 feet in diameter then something that big sliding that far would surely gouge out a bigger trough through the sea bed and leave debris scattered in its trail.
Admittedly it’s a poor picture so there well could be more information to be found shame they have no funds for the submersible. So unless their request for funding from a TV company proves fruitless then it could be a non-starter
In life you make mistakes, but that's life. As long as you learn by the mistakes you make, don't be afraid to make them.