When William Aliotti first debuted the Twin Fin Invitational (TFI), the collective response was, “Damn, that looks so fun.” Now, in its third year, it’s safe to say he has turned that feeling into a lasting impression, one the invited surfers all seem to share.

The concept is simple: surfers must ride twin fins and showcase their style, flow, and creativity. Performance is judged by the surfers and filmers over the course of the week, during two days of mixed heats (men and women surfing together), and a video recap presented at the closing ceremony determines the winners.

As an official media partner of the event, SURFER will be covering and hosting the four-episode series on our YouTube.

The first episode’s theme is “Ongi etorri,” which means “welcome” in Basque. It’s an introduction to how the TFI is so much more than a contest.…