A disabled orca first spotted in 2013 was seen again by chance four years later in Algoa Bay, South Africa and is now the leader of the pod. The young killer whale has a missing dorsal fin and right-side pectoral fin, leaving him unable to hunt for himself, but he was cared for by members of its pod, that shared food with him.

Photograph: Rainier & Silke Schimpf/Barcroft