07/30/2015 AT 03:15 PM EDT
, a longtime animal rights activist, is no stranger to stripping down for a cause close to her heart.
The former Real Housewives of Miami
star, 36, wears only black and white paint in images for a new PETA ad that brings attention to orca whales kept in captivity.
The former Playboy
model poses in a giant fishbowl, with the logo: "Captive Orcas: Sad. Lonely. A Long Way From Home." The campaign aims to put pressure on SeaWorld, in particular.
Joanna Krupa PETA ad
"For me, animals are not that much different from human beings," Krupa said in a behind-the-scenes video
from the shoot. "We both feel pain. And when they're separated from their families, they cry."
In 2012, Krupa stripped down for PETA
to highlight the suffering caused by the fur industry.
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"I can only envision and feel the pain of these animals being stuck in a tiny aquarium," she said of the living conditions at SeaWorld. "Normally orcas swim 100 miles a day. They're free in the ocean. And here they've been captured since they were little babies."
Krupa chose the body paint to symbolize the orcas – and kept her face unpainted to show the connection between humans and the captive whales, she said in the video.
"They're living, breathing things just like we are."