The singer is currently on her Diamonds World Tour and travelled to the South African city after playing in Johannesburg Sunday.
The Stay hitmaker was joined by her mother, aunt and other family members and filled up her Instagram newsfeed Monday with a series of strange poses of herself with animals as she documented their trip.
"Aquarium visit with the fam today in Cape Town, good times," she captioned a shot of herself on a balcony above images of the Atlantic Ocean.
In a more bizarre image, she posed in a black and white outfit next to a penguin.
"B***h stole my look," Rihanna mused.
"G'd up crab," she captioned another image of herself with a giant crustacean.
Rihanna's social media feeds have become subject to increased scrutiny in recent weeks after it was revealed an Instagram photo she posted of herself posing with a protected primate known as the slow loris led to the arrest of two men in Phuket last month.
According to the Associated Press, just this week a sex show owner in the city was charged with obscenity and operating an entertainment venue without a permit after Rihanna referenced a venue that was allegedly operating illegally.
The singer has not commented publicly about the arrests.
The star's last show on the trek will be held in New Orleans, Louisiana November 15.
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