Which of theStingrays are fish, closely related to sharks. They can be found in salt water oceans and seas throughout the world. There are some fresh water species in Asia, Africa, and Florida. Stingrays swim with a "flying" motion. Instead of fins, they have wings on their sides. The wings' movement allows the stingrays to "fly" through the water. Their stinger is a spine that grows from the tail. It can grow to be over 14 inches long. The spine is poisonous. What is this paragraph mostly about? follow shows cellular organization from the smallest unit to the largest