Norwegian scientists have discovered a "treasure trove" of fossils belonging to giant sea reptiles that roamed the seas at the time of the dinosaurs.
The 150 million-year-old fossils were uncovered on the Arctic island chain of Svalbard - about halfway between the Norwegian mainland and the North Pole.
The finds belong to two groups of extinct marine reptiles - the plesiosaurs and the ichthyosaurs.
One skeleton has been nicknamed The Monster because of its enormous size.
The Monster is an 8m long pliosaur with a most complete skeleton of such an animal ever found:
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