Former All Blacks Captain Richie McCaw has had an up close and personal interaction with a stingray while on holiday.

Celebrating six months of marriage with wife Gemma McCaw, the pair took to the tropical ocean before coming across the inquisitive and sociable sea creature.

In a photo posted to Facebook, the McCaws can be seen hugging the stringray while posing for a selfie.

"Caption this #photobomb", it said in the post.

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Fans took to social media, egging Richie on to give the animal a kiss on the lips.

"Did you kiss it? Supposedly you will get good luck if you kiss one, so of course I had to try it," one person wrote.

"C'mon Richie just a little peck while the Mrs isn't looking..." another joked.

"Can we just do the autograph instead of the kiss please?"