People playing with sea lion and chimpanzee at Olympic Swimming Stadium in Berlin

Man and woman holding hands with chimpanzee, standing next to them man in nautical outfit holding sea lion on leash, people watching / two shots of chimp trying to climb up man standing next to him / chimp climbs up man standing next to him / woman feeds fish to sea lion while man and woman hold on to chimp / woman feeds fish to sea lion and when sea lion goes after fish chimp jumps up while holding hands of man and woman / woman kneeling holds on to chimp while other woman feeds fish to sea lion, then man feeds fish to sea lion, then man hands fish to woman holding chimp / woman holding chimp feeds fish to sea lion / Note: exact day not known