Ever wondered why on genshin the otters always carry sea shells? If you see any aquarium videos related to otters, you might notice that they always give some silly rocks to them. Wild sea otters mostly use rocks to break animals to eat or to simply play. But the sea shells are less hard compared to normal rocks, it might not be a surprise on why they use as toys the rocks. But on genshin it shows that they're favorite rocks are sea shells, wich is funny because they prefer harder ones to carry