Got that sinking feeling? Terrifying photos of circling sharks, giant jellyfish and monster waves prove the ocean is a place of nightmares 

Do you ever get hit with that sudden feeling of dread during a perfectly pleasant paddle in the ocean?
If so, your fears are not unfounded. To date, we've explored less than five per cent of the ocean, and considering it covers more than 70 per cent of our planet, this notion alone is unnerving.
What we do know is that the sea is home to all manner of terrifying creatures, has the power to decimate entire cities with its force, and is so deep and dark we can hardly even see what's under there.
This trepidation in its most extreme form even has a name: thalassophobia - a condition classified... read more