Riverdale star KJ Apa got wet and wild in Lake Wakatipu while vacationing in his native New Zealand over the New Year.

The half-Samoan, half-Kiwi 21-year-old was joined in the summery South Island by his shirtless castmate Cole Sprouse.

Apa not only bonded with the Italian-born, Cali-raised 26-year-old in the water, he also taught him some rugby moves on a field.

Pecs alert! Riverdale star KJ Apa got wet and wild in Lake Wakatipu while vacationing in his native New Zealand over the New Year

Refreshing dip: The half-Samoan, half-Kiwi 21-year-old was joined in the summery South Island by his shirtless castmate Cole Sprouse

However, the Friends alum - who played Ross' (David Schwimmer) son - didn't seem too familiar with New Zealand's national sport.

KJ (born Keneti James) and Cole brought along Matthieu Olo-Whaanga, Boston Ridge, and Blair Huston for some outdoorsy male-bonding organized by Fortis Events.

While visiting home, the Hate U Give heartthrob also cuddled up to his sister Timēna's pet Chihuahua whom he called 'my tiny son.'

The adventure-filled bromance continued with a helicopter tour, a mechanical bull ride at Cowboys Bar, and the Hidden Valley Festival.

Kick! Apa not only bonded with the Italian-born, Cali- raised 26-year-old in the water, he also taught him some rugby moves on a field

Whoops! However, the Friends alum - who played Ross' (David Schwimmer) son - didn't seem too familiar with New Zealand's national sport

'That’s a wrap!' KJ (born Keneti James) and Cole brought along (from L-R) Matthieu Olo-Whaanga, Boston Ridge, and Blair Huston for some outdoorsy male-bonding

'My tiny son': While visiting home, the Hate U Give heartthrob also cuddled up to his sister Timēna's pet Chihuahua

'Lads': The adventure-filled bromance continued with a helicopter tour, a mechanical bull ride at Cowboys Bar, and the Hidden Valley Festival

Lensman: Sprouse (L) - who just shot a J Brand campaign with his twin brother Dylan - enjoyed photographing the majestic Aoraki/Mount Cook National Park

The NYU grad wrote on Instagram Wednesday: 'New Zealand makes it easy for you. Needed a breath of fresh air, brains before brand'

Sprouse - who just shot a J Brand campaign with his twin brother Dylan - enjoyed photographing the majestic Aoraki/Mount Cook National Park.

'New Zealand makes it easy for you,' the NYU grad wrote on Instagram Wednesday.

'Needed a breath of fresh air, brains before brand.'

By Wednesday, KJ and Cole appeared to be back on the LA set of their Archie Comics-inspired teen soap as he Insta-storied co-star Lili Reinhart.

Onscreen leading lady: By Wednesday, KJ and Cole appeared to be back on the LA set of their Archie Comics-inspired teen soap as he Insta-storied co-star Lili Reinhart

Lady in red: The 22-year-old blonde - who's been dating Sprouse since March 2017 - attended the Golden Globe Awards in Beverly Hills on Sunday

'I've wanted to walk this carpet since I was 10': The Galveston actress nearly put on a sideshow in her strapless red chiffon Khyeli couture gown selected by stylist duo Brit + Kara Elkin

The 22-year-old blonde - who's been dating Sprouse since March 2017 - attended the Golden Globe Awards in Beverly Hills on Sunday.

The Galveston actress nearly put on a sideshow in her strapless red chiffon Khyeli couture gown selected by stylist duo Brit + Kara Elkin.

'I've wanted to walk this carpet since I was 10 years old,' Lili gushed on Instagram. 'I am floored. God is good.'

Catch more of Betty Cooper, Forsythe 'Jughead' Jones III, and Archie Andrews in the third season of Riverdale, which resumes January 16 on The CW.