Dolphins are found in all our world ocean. These elegant and cheerful toothed whales have many small, pointed teeth. However, they do not chew their prey, but swallow it whole. Dolphins are very social animals and communicate with other dolphins through whistles and clicking sounds. They have a large brain, which means that many zoologists believe that dolphins are considered the animals with the highest intelligence. Due to their body shape, they have a particularly low resistance in the water. They can reach very high speeds, up to over 50 km/h when swimming.
There are many different species of dolphins, in fact over 40 different and in different sizes varying from just over a meter up to over four meters or more. The killer whale is actually the largest and is classified as a dolphin species that can grow to be over eight meters long. The smallest species weigh around 50 kg as adults, while fully grown orca males can weigh over 9 tonnes. All dolphin species live on animal food, mainly fish and squid. The killer whale is the only one that eats other mammals such as seals.
