The sea is beautiful, but sometimes it is dangerous because some animals are poisonous, the bride when we dive, we must be careful not to hit the animals that we don't recognize or poisonous animals.
The sea is beautiful, but sometimes it is dangerous because some animals are poisonous. So as we dive we must be careful not to touch the animals that we do not know. Or poisonous animals
The sea is beautiful, but sometimes it is dangerous because of some kind of animal poison. So while we must be careful not to hit the US black animals that we don't know, or animal poison.