Watch: Shirtless Efron Brothers – Zac and Dylan – Share Bungee Jumping Vids

The Efron brothers – Zac and Dylan – stripped down and went bungee jumping on Tuesday, which both brothers shared on their respective IG accounts.

"In a clip shared to Instagram, the genetically blessed brothers took the unnecessary step of taking their shirts off before leaping from a platform overlooking a river," wrote the Daily Mail.

The clip follows them as they jump, scream, and clutch onto each other as they descend. "I can't tell who's screaming, him or me," Zac wrote on his IG.

Dylan's edited clip comes from several different angles, showing them jumping from a platform high above a swimming pool, which they appear to skim before being pulled back by the chords.

In both Instagrams, the resemblance between the two is apparent, most notably in their toned bodies. The major physical difference is Dylan's 1970s-styled mustache.

Zac, the Daily Mail added, "gave his brother a jovial kiss to celebrate the successful landing."

Zac and Dylan have been busy exploring Tasmania - an island state detached from the Australian mainland - for their new Netflix series, "Down To Earth."

Zac also shared a pic of himself immersed in green light while visiting the world-famous Museum of Old and New Art (Mona) in the state's capital of Hobart on Thursday.

Dylan shared a similar one of himself being chased by rainbows. "Felt like Willy Wonka walking through @monamuseum," he wrote.