Portuguese man o' war
The organism has few predators of its own; one example is the loggerhead turtle, which feeds on the Portuguese man o' war as a common part of its diet. The turtle's skin, including that of its tongue and throat, is too thick for the stings to penetrate. Also, the blue sea slug "Glaucus atlanticus" specializes in feeding on the Portuguese man o' war, as does the violet snail "Janthina janthina". The ocean sunfish's diet, once thought to consist mainly of jellyfish, has been found to include many species, the Portuguese man o' war being one such example.