I am absolutely playing in peaceful mode in an online realm I created. I created a second nether portal far enough away from the first that it takes me to another spot entirely in the nether than the previous portal. I entered the nether in this new portal, and my portal and I are in the air a great deal, over lava and there are ghasts everywhere. They didnt attack so I left to grab supplies from the over world. The second I came back into the nether, a Ghast attacked me. Not wanting to die, as the portal had spawned in the air above lava, I jumped back in the portal. Why am I being attacked only sometimes in peaceful mode in the nether?