This video from the Netherlands says about itself:
8 March 2016
The harbour porpoise called Nena who was found on the German coast Saturday 5th of March 2016 is doing a little bit better already. She is eating fish very eagerly and is already swimming by herself again. She only needed to be supported in the water for 24 hours and after that the little whale made it clear that she wanted to try it on her own again.
Carefully she tried and people in the water were standby in case she would still be too weak and to prevent her from bumping into to wall. After 48 hours in the rehabilitation centre Nena was already making some small dives again. Good news! To take care of animals like Nena, SOS Dolfijn is looking for benefactors.