Deadly Creatures

I have a fascination with what creatures are out there that we haven't discovered.

When I was editing 'Camouflage' I came across an article about a shark found off the shore of Portugal that was from a species 80 million years old! Here it is on youtube;

Some people may believe it's unlikely there are large deadly animals that we don't know still exist, but I think any day we could find one. Every year new species are found. 

And then if we discover something huge and dangerous the question will be--would we have to kill it or is there another way?

Ivy Keating