Shark Invested

Katie, Chad, Ben, Simon and Lily are all friends enjoying life and are all very close. They have had the opportunity to get time off work to go away for a week or so. As a group they come to a conclsuion to take this chance and go somewhere different.
They go away on a trip to an island by boat.
All are certain that the sea is clear of any dangers. And they all seem positive that they will get to the island in once piece together.
But even though Katie's boyfriend Chad seems to be an expert on the sea, he forgets to warn them about one thing.

Sharks.