Translation of unlikely in German

He also told me that he had build his scooter by himself. I could not understand how a doctor was able to build such a machine on his own. It seems that the circumstances made people capable of many things.
Sunday is fine. Please let us talk tomorrow to arrange a schedule of that day. I will call you tomorrow, but in any case, here is my number again. We could do it also on Monday next week, if it fits everybody.
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.