Have you ever heard about butterflies able to migrate across America and through the sea? Monarch can!
Monarch is born is north America and south Canada. As caterpillars, they eat only milkweed leaves, which give them toxin, so as to protect themselves from predators. After several molts, they become flying butterflies and they depart the bith place for Mexico, along with the shorter day length. There are several different migration pathways and one of them is to go across the Mexico Gulf (not shown in the picture). When they find grilling platform on the sea, they will have a rest on this precious 'land' and depart in the following morning. In Mexico hemihibernating field, there are tens of thounds of butterflies getting together. Here, their reproducing system get inactivated and they stay in clusters, in order to keep warm, for six months.
When spring comes, they fly back to America and Canada, with active reproducing systems. Upon arrival at the breeding place, they begin to mate and lay eggs, and also their life reaches to the end.
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