Marisa Miller Marisa Miller

Marisa Miller bared all for PETA in protest of the alleged animal abuses at SeaWorld.

In the ad, the pregnant supermodel lies naked in a bathtub, alongside the caption: "SeaWorld: Separating babies and mothers since 1970."

Everybody's posting nude!

According to E! News, Miller wanted to put herself "in the place of captive orcas at SeaWorld" and was inspired to participate in the campaign after watching Blackfish.

"Being a mom and seeing Blackfish, it was extremely emotional," Miller says. "I think any mother knows the sense of protection and connection you have with your baby."

A photo posted by PETA (@officialpeta) on