British Steamer Nisbet Grammer

Historic steamship found in Lake Ontario

Shipwreck explorers Jim Kennard and Dan Scoville began their initial search for the vessel in September 2008.

What was thought to be an easy shipwreck to find turned out to be more of a challenge than they expected, Kennard said. Their search did, however, lead to several new discoveries in this area of the lake.

Kennard said they found the wreck of the Nesbit Grammer in late August 2014 in more than 500 feet of water about 8 miles from the shore of Somerset, N.Y., but he was unable to share the information at that time.

Astern of the wreck, Parks Canada underwater archaeologist Filippo Ronca measures the muzzle bore diameter of one of two cannons found on the site, serving to identify this gun as a brass 6-pounder

Historic Franklin Expedition shipwreck identified as HMS Erebus

Two ships, HMS Erebus and HMS Terror, were part of Sir John Franklin's doomed expedition in 1845 to find the Northwest Passage from the Atlantic Ocean to Asia.

The ships disappeared after they became locked in ice in 1846 and were missing for more than a century and a half until last month's discovery by a group of public-private searchers led by Parks Canada. It was not known until now which of the two ships had been found.

Great white sharks as scavengers

University of Miami scientists Dr Neil Hammerschlag and Austin Gallagher, in collaboration with Chris Fallows of Apex Expeditions, South Africa, observed the feeding activity around four dead whales that appeared in the False Bay region during a period of ten years. They concluded that such bountiful sources of energy-rich blubber may be a significant food source for the great sharks.