Tjorven, Batsman, and Moses

Vesterman has found a young seal in his fishing nets in the outskirts of the archipelago. When he comes back to the Saltkråkan island he gives the seal to Tjorven, who names it Moses. Peter Malm, a visitor who works at the Zoological Institute in Uppsala, wants to buy the seal, but Tjorven says it's not for sale. Veste