There you are, happily taking a dip in the sea while on holiday in Cornwall. You're rather enjoying yourself - apart from the fact it's absolutely freezing cold, of course.
That is until you see a fin. Yes, A FIN.
VIDEO: Basking sharks caught on camera by a Penwith lifeguard over the bank holiday weekend.https://t.co/G1vaByLj44
-- RNLI (@RNLI) June 2, 2016
RNLI lifeguards were joined by basking sharks over the bank holiday weekend at Porthcurno beach. The unexpected visitors only feast on plankton and aren't known to attack humans.
But still, that's not to say you wouldn't be totally freaked out if you saw one close to the shore. Or close to you, for that matter.
I really want to swim in the sea later but if I see a basking shark I would automatically assume that it's a great white shark and die
-- Tamikaaa (@TamikaStevensxx) June 2, 2016
After all, adult basking sharks can get up to - you might want to brace yourself for this - around 30 feet long. They're the second largest species of shark in the world.
-- Blue Planet Society (@Seasaver) June 3, 2016
Late May/June is the best time of the year to see the gentle giants. Seriously, it seems like they're popping up all over Cornwall - and some people are very excited about it.
-- Jack Hirst (@Jackhirsty) May 29, 2016
Let's just take a moment to appreciate the way basking sharks swim along on the surface of the water, with their mouths just casually hanging right open (it's to filter the seawater for that plankton they love so much, FYI).
This method of eating crisps is the only thing to compare it to.
If u don't finish the ends of a bag of crisps by emptying it into ur mouth like a basking shark unfollow me
-- Ellen Tannam (@incogellen) June 1, 2016
Aw, they're kinda cute sharks really...
No, you know what, we take it back - we'd still freak out.