Kim Kardashian is swimming with the fishes ...literally.

The reality TV star posted a 10-second video to her Instagram on Tuesday (June 24) of her taking a dip and riding on the fins of two dolphins -- all with a huge smile on her face.

It seems the dolphins were just as smitten with Kim since she posted an adorable shot of her giving one of them a big old smooch... better watch out Kanye!

No word on where she was, but it's possible she went on the excursion during her second honeymoon in Mexico earlier this month.

Kim and Kanye just came off a big weekend as they celebrated baby North's 1st birthday with a "Kidchella"-themed birthday party, complete with Ferris wheel and bouncy castle.