Translation of unchangeable in Spanish

What steered the little fly to the plant? Naturally, we do not know the answer. The human being cannot understand nature because he is part of it, he is inside it. Therefore he cannot judge objectively.
Seldom only do such incidents occur, thank God, but the fact is that these incidents, which are started by a relatively small group, need to have a broader support among others in order to exist.
One could see the animals from a distance. There were sea lions, whales and penguins, all very far away. In the evening we went on a boat for whale watching which was a really great experience.