For many, the depths of the sea are a daunting and unfamiliar place – but one freediver has fallen in love with discovering the secrets of marine life after dark.

Using his TikTok account to share vibrant videos, Iestyn Morgan, 21, has left viewers in awe of the species frolicking around UK seas.

“It’s not everyone’s cup of tea,” said Iestyn, who has become passionate about putting a spotlight on varied and often unknown species living off Wales’ coast.

Iestyn has always loved the sea but was inspired to try out freediving after spotting a video online in April 2025: “I was like OK, I need to try this out myself. So I bought a torch and just gave it a go.

“I think the reality is, these animals are probably more scared of me than I am of them.

“It’s not often they see a man bopping about in the sea with a torch.”

Night videos seem to be the one that people are the most drawn to, said Iestyn, from Pembrokeshire, as nocturnal species, including squid, garfish, cuttlefish, stingrays and cat sharks, come out, and are often “bolder” at night.

“People think you need to travel far abroad to experience such diversity, but you don’t have to, it’s right here on your doorstep.

“The coolest encounter I’ve had, if I had to pinpoint one, was I was out at night and saw what I thought was a school of about 50 bass and they were coming towards me.

“But as they got closer, I realised they were squid, which were attracted to my torch light. So for about a minute I had about 50 squid circling me, which was super cool

“I had no idea myself there was that much out there to see and that’s what I want to showcase in my videos.”