Her electronic gear was designed for distance and not close-up detail of manmade sunken objects.

The 48-year old ship, one of several vessels used by the Engineer Corps to collect harbor debris and sunken objects, is ideal for collecting this flotsam, Captain Gaudreau said.

For a sunken object, the entire volume displaces water, and there will be an additional force of reaction from the solid floor.

However, there's not a lot to see in the water beyond some brightly colored fish and deliberately sunken artificial objects.

The invention involves training beluga whales to carry in their mouths a tool for latching on to sunken objects.

Sea lions can dive up to 600 feet, while whales have been used to bring back sunken objects from 1,000 to 1,500 feet.

The eggs adhere to roots, aquatic vegetation, rocks, travertine or sunken objects and are abandoned to their fate.

While photographs of treasure wrecks are often taken, largely as an aid to salvage, images of all kinds of sunken objects are emerging as prizes unto themselves.

He finds he has a talent for it, and in one photo he spots a sunken object in the waters near California.

In the 1970s, Carter worked as an abalone diver, and invented Carter Lift Bags, flotation devices to bring sunken objects to the ocean's surface.