I have seen a large porky puffed up once, I was cool to see. But he puffed because a large leopard shark was harassing him.(This was at the omaha zoo aquarium) He was about as big as a volley ball, and with the spines sticking out I can see that it would be a very effective defense.
Splash1914 , That puffer you are talking about, do you have a latin name for them or maybe a common name ? I have never seen a salt water puffer bury them selves , but i have seen congo puffers(light brackish)Do that. VERY COOL
!! Where they aggressive or rather passive ? and how big? I think they would be a cool addition to an aggressive tank.
Sorry for all the questions , but the discription caught my interest.