st.arga and a couple of gray seal puppies are constantly surfacing, checking to see if the keepers have arrived with a portion of treats. keepers always arrive on schedule, every day except thursdays 12:45. at this time, demonstration feedings are carried out. from the outside. looks like an entertainment program for visitors: sea predators turn over, raise their weasels, jump, but while the charges are on land, the zoo staff have time to examine them and understand whether they are feeling well, so they are given veterinary training, the keeper gives a signal whistle and the animal understands what to do, it means to go out, you are doing everything right, you are doing something wrong, why the whistle, because firstly, it can be heard under water, secondly... this is a short signal, that is, we can shout to it: yes, animal, you are doing the right thing, but while we shout this, a certain amount of time will pass, the whistle is to tell the animal that specifically at this particular se