I'll bet that if these tourists ever go out on the water again, it'll be in a steel-hulled ship!
They were just offshore at Mossel Bay, South Africa, looking at seals that live in the area. A 12-foot Great White Shark approached their boat--then bit into it! His teeth easily punctured the rubber pontoon, deflating it. The boat operator prudently headed to shore immediately.
-via Gifsboom
There! It had to be said!