It's great to have a conversation with Kirk when he is making sense. Today we started discussing seahorses which we were modelling from plasticine. Kirk's seahorse naturally morphed into a submarine and then he asked whether cleaner wrasse would clean a submarine or boat hull. "Yes, if it stayed still for long enough but it's better if people clean the boats because too much grows on them". We then went into why boats and submarines had to be cleaned (to reduce drag) which ended up in a demonstration on friction. PLEASE let the weather fine up so we can use his snorkle set!