Bottlenose dolphins use a technique called echolocation to find food and navigate. This technique is performed by sending ultrasounds through the water. They also process a lot of information at the same time. For instance, a dolphin can listen to acoustics and process visual cues at the same time. Another major intelligence ability they have is language. When you hear a dolphin squeak, whistle, and click, that dolphin is communicating. These sounds aren't just random noises. The best-known trait these gentle creatures have is their altruism. There are a lot of recordings that show them coming to the rescue of other injured or sick dolphins. This time, it's humans doing the rescuing. Just watch how they do it.