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The Dolphin - Wanted Poster


Characteristics

Surname: Dolphin
Latin name: Delphinidae
class: Mammals
size: 2 - 4m
mass: 100 - 350kg
Older: 10 - 50 years
Appearance: gray-white
Sexual dimorphism: no
Nutrition typePhotos: Fish eater (piscivor)
food: Fish
distribution: worldwide
original origin: unknown
Sleep-wake rhythm: diurnal
habitat: Oceans
natural enemies: Orca (Orca)
sexual maturity: 6 - 12 years
mating season: all year round
gestation: 12 months
litter size: 1 cub
social behavior: Herd animal (so-called school)
Threatened with extinction: endangered
Further profiles of animals can be found in the Encyclopaedia.

Interesting about the dolphin

  • Dolphins live in groups with several dozen individuals (so-called dolphin schools). Hunted is usually in the composite.
  • Dolphins are among the most intelligent animals in the animal kingdom. Dolphins recognize themselves as one of the few animals in the mirror (otherwise only chimpanzees, orangutans, elephants and magpies can do that).
  • When dolphins go hunting, they rely on echolocation. It ejects sound waves that bounce off other fish and return to the dolphin. At the returning echo waves, the dolphin recognizes its prey.
  • Dolphins are not fish, but mammals.
  • In order not to drown, dolphins sleep alternately with one brain half.
  • Dolphins talk in the water over shrill whistles. Researchers could even find out that the dolphin language follows its own grammar. Decrypting the language has not been successful so far.
  • The smooth skin of the dolphins allows them a speed of 80h / km. This makes the dolphin the fastest mammal underwater.
  • Although dolphins have teeth, they usually eat their prey unchewed.
  • In comparison to humans, pregnancies last longer with the dolphin at 13 months. Cause: Dolphins must be able to swim independently at birth. Otherwise, they would be looted by predators in no time.
  • Apart from humans, dolphins only need to fear killer whales (orcas).