Incredible drone video shows two paddle boarders relaxing on their boards in Cancun, Mexico as a giant whale shark looms below in crystal clear waters.

The shadow of the whale shark appears to be twice their size, but doesn't seem to startle the vacationers.

Two other people are seem swimming nearby, equally as un-phased.

In fact, these vacationers don't have much to worry about while swimming alongside this gentle giant.

Drone video captures two people carelessly paddle boarding in Cancun, Mexico, as a giant whale shark looms below

Despite whale shark's enormous mouths and more than 3,000 teeth they are actually harmless to humans.

That's because their diet is limited to tiny micro-organisms like plankton and krill. They also swim at a rate of three miles-per-hour.

Plus, they are already accustomed to swimming alongside humans, making them exceptionally docile creatures.

An average adult whale shark is 41,000lbs and 40-feet long, a size that would intimidate most people.

And it's no surprise that this shark was spotted in Mexican waters. From June to September, the largest congregation of whale sharks happens off the coast of Cancun.

There are also two swimmers nearby who are equally as un-phased by the beast