Common bottlenose dolphin or Atlantic bottlenose dolphin

Tursiops truncatus

Weight:

180 to 650kg (5 to 9.5 lbs)

Size:

1.9 to 3.8 m
Mammals
Piscivore
Oceans and seas
Africa
Central America and Caribbean
North America
South America
Asia
Europe
Oceania

Interesting facts

In human beings, our respiration is controlled by the cerebellum, which makes it an unconscious process.  In dolphins, like is all cetaceans, respiration is controlled by the brain, making it a conscious process. 

Conservation

Least concern

Out of the 36 species of dolphins, it is the most famous species given its presence in marine parks.  It is a strong dolphin with a short and wide rostrum (beak). Like most cetaceans, their belly is a pale color, ranging from white to pinkish. 

Environment and behavior

Atlantic bottlenose dolphins are cosmopolitan and opportunistic. In other words, they adjust their behavior to suit their environment.  They live in fission-fusion-type social structures.  Each community is made up of sub-groups that merge and separate, based on environmental conditions and the time of year.  In fact, the pod's size depends on the density of predators and prey. If the density of predators and/or prey is high, the pod will tend to be bigger. Conversely, if there are few predators and prey, the pod will be smaller.  There is no real reproduction period.  Gestation takes one year.  Some mother/child relationships or alliances between males can last for many years.

Predators

Their natural predators are large sharks and killer whales.

Threats

Common bottlenose dolphins are victims of by-catching in fishing nets, overfishing, competition with fisherfolk, pollution, and damage to their habitats.