https://www.newscientist.com/article/dn27213-zoologger-hollow-marine-monsters-as-big-as-whales/ https://www.newscientist.com/article/dn27213-zoologger-hollo...

https://www.newscientist.com/article/dn27213-zoologger-hollow-marine-monsters-as-big-as-whales/ https://www.newscientist.com/article/dn27213-zoologger-hollo... This article has a picture of a sea turtle taking a nice chomp out of a smaller one. Maybe nothing that eats them ever feels like eating the whole the colony. It would seem it's pretty tough to tear it.