Due to the lack of activity i will divulge into another topic;  Did anyone watch Shark Week and see the special on Megalodon?  I know there will be those that are absolutely skeptical that anything like that could still be around and others that say you never know.  All in all, the shark's size, strength, teeth, etc are such that it would take a pretty good sized warship to be able to sustain their blow if they swam into it at full speed.  Small sailboats, cabin cruisers, smaller fishing boats, etc. would be mere wisps in his way.  They say Megalodon would have been able to pretty much ingest whole something the size of a city bus.

I find this sort of stuff quite interesting though I read some reports that ripped the whole show and said the supposedly professional hosts were hacks, all the photos and videos were digitally enhanced and altered, etc.

They supposedly shot a tracking dart into a LARGE form that tore apart the shark cage and when they started getting signals and the big boys were watching the computer screen, they were stunned at how fast and deep it was diving.  Said they had never seen anything like it.  Sharks supposedly have never been seen below 4K ft deep, but this thing was blowing past 6500 ft when the transmitter stopped working (transmitter was only rated to go to 6000 ft).

Anyway, that would be a quick way to go.