The beluga whale is a kind of whale, and many of the beluga whales we have seen live in aquariums or zoos. When they are observed at close range, they sometimes open their mouths to people. Sometimes this means that belugas like someone and want to interact with humans. Sometimes belugas open their mouths to scare people, but they don't mean to hurt people, they just interact in another way. Belugas like to play with people, especially children, so they will interact with people in various forms. Opening their mouths at people is one of the ways to interact, and sometimes they will spit water at people.
When we observe beluga whales at close range, we may see them open their mouths at people, some people will think that this is because beluga whales hate people. No, the beluga is a gentle whale that is very friendly to humans. They open their mouths at people because they want to interact with people, they want to play with people. By opening their mouths, they can quickly attract human attention and let humans play with them. They express this desire not only by opening their mouths, but sometimes by spitting water at people. In addition, belugas may open their mouths at people because they like someone, and belugas often respond to children, because belugas prefer children.