Keeping pet turtles can be ethical as long as they are provided with proper care, a suitable environment, and their needs are met. It's essential to ensure that the turtles are not taken from the wild illegally and that they are acquired through legal and ethical channels. Additionally, it's important to consider the well-being of the turtles and provide them with a proper diet, adequate space to move around, and access to veterinary care when needed. Overall, responsible pet ownership is key in making sure that keeping pet turtles is ethical.