These emojis depict sea food. Or the marine fauna itself — it's hard to tell. That's how it happens in real life too: despite having been cooked, some lobster looks particularly alive on a plate. It's just taking a nap. That's why the Ministry of Health doesn't recommend you to swallow crays and crabs as a whole. First, chew the pincers carefully. Otherwise, you'll be disturbed by this creature waking up in your stomach, saying "Oh, it's definitely not the place where I fell asleep."