User blog comment:King Sea Dragon/Leviathan Challenge!/@comment-29410794-20180619120924

I Like This Challenge. I Would Add To The Game A Giant Spiky Black Bioluminescent Bird, With A Long Drill Tail. It Would Live Underground And When Disturbed It Would Come Out The Ground And Drag You In It's Large Cave (New Biome). You Could Avoid It By Crafting A Special Suit That Doesn't Produce Sounds. Ill Call It The "Depth Ripper". I Got Inspired By This Image (Keep In Mind That My Version Doesn't Fly So High And Isn't So Big):