People 'terrified' after man drops GoPro under cruise ship and discovers what's underneath

Footage caught on a GoPro camera which was dropped into the ocean from a cruise ship has left people with an 'intense fear'.

Going on a cruise ship has to be up there among the most luxurious and relaxing trips possible.

All you need to do is get on board, grab a cocktail and find a sun lounger, ready to set sail and let the sights come to you.

The ships are equipped with all sorts of attractions to keep customers happy while they're on board, but have you ever thought about what's going on underneath?

Greek photographer Odysseas Froilan has.

Don’t watch this if you want to enter the ocean again:

In fact, Froilan was so curious about the goings-on that he decided to lower his GoPro into the water to get a rare look beneath the vessel. Looking at the footage, a lot of people are wishing he hadn't.

Things started off nice and tame as the footage revealed a school of fish happily going about their lives, even if they were slightly perplexed at the foreign object that had dropped into their home.

However, when night fell, things took a turn.

Viewers were initially delighted to see the school of fish seemingly complexed at the GoPro dropping in (Odysseas Froilan/YouTube)

Out of nowhere, sharks began to come into view of the GoPro camera, with one quickly darting into the light before swimming off quickly.

Moments later, a huge shark approached from the shadows.

After watching the clip, one viewer wrote: “The way I went from kicking my feet in the air at the cute fishies and thinking ‘maybe the ocean isn’t so scary after all’ in the day footage to blankly staring, terrified, at the night footage, further confirming my intense fear of the ocean."

Some reinforced viewers’ intention to not swim in the ocean (Odysseas Froilan/YouTube)

Another added: “This was way more interesting than I thought it would be. Man there’s something primally terrifying about seeing a shark emerge from the darkness like that."

“For years I wondered why there were pools on a cruise ship when there was this great big body of water to swim in. It’s videos like this that make me realize the importance of swimming in chlorine water,” wrote a third.

Another viewer urged anyone who might be taking a cruise any time soon to avoid 'taking a bet' and jumping into the ocean at night.

They wrote: “I would just like to point out the difference in marine life depending on the time of day [ ...] most sharks are nocturnal hunters and they are basically just waiting for you."