Stomach Baron

Stomach Baron (ストマックバロン) is a species of giant carnivorous seaborne plants that form the chains of "islands" in Boin Archipelago. Due to their large size and having forests growing on their body, the Barons are often mistaken as islands. The forest have "plants" that are made of a variety of highly nutritional and delicious food in the middle of the island (which is actually the "mouth" of the Barons) to lure preys including sea kings to venture there before the Barons consume them. They first appeared in chapter 591 and episode 455.