What these animals do -- and there's many others, these are just three of them -- is they make adhesives, they stick to each other, they stick to the rocks and they build communities, and by doing this, there's a lot of survival advantages they get.
Que font ces créatures ? Il y en a plein d'autres mais en voici trois -- elles font de la colle, elles s'agglutinent sur les rochers et créent des communautés, et, en faisant cela, augmentent  leurs chances de survie.