Why Do Spinner Dolphins Spin?

Have you ever seen a dolphin that jumps like this? The spinner dolphin is a true athlete of the seas. Found all over the world in huge pods of up to 200, these dolphins have been known to gather in super pods of more than 1000 and mega pods of over 3000! But why do they spin? Well, there are a few theories: Some think that the sound of the slap as the dolphin belly flops back into the water lets the rest of their pod, and even distant dolphins know where they are. Others speculate that the splash helps