Adrian Grenier is an animal lover and he says he owes it all to the 1984 Tom Hanks film
Splash. NYDN told him that mermaids aren't real. Grenier, who's bubble was burst, responded, "Wait. Aren't mermaids animals? Whatever, they still count."
A lot of actors are idiots so this kind of stuff is to be expected. Ask any celebrity why the sky is blue and they'll stare at you like you just killed their dog