The image above is of a Ritteri anemone (Heteractis magnifica), apparently the one Nemo likes to hang out in. Nemo is a clownfish (Amphiprion ocellaris) of course, and the reason it doesn’t die from the anemone’s sting, is that its body is covered in a mucus that protects it against the toxin. This makes the anemone a safe place for little Nemo (and his dad!), and in return in eats algae and fish leftovers from the anemone, keeping it clean.
After an absence of eight years the polar bears are back in our zoo, and this is advertised with posters like the one on the left here, which shows the infamous gorilla Bokito, receiving a snowball against his head, with the subtitle “The polar bears are back in Blijdorp”. The same kind of posters have been made with a giraffe and an ostrich, but I like this one best.