Bottle-nosed Dolphin

Turiops truncatus


Domain Eukarya- In this domain all organisms are multicellular or single celled and all of their cells have a nucleus. Also, the organisms in this domain have Eukaryotic.

Kingdom Animalia- The organisms in this kingdom lack a cell wall, are multicellular, and are heterotrophs (rely on other organisms for nourishment).

Phylum Chordata- Animals in this phylum have a digestive system, exoskeleton, and bilateral symmetry.

Sub phylum Vertebrata- In the sub phylum Vertebrata the animals have a large digestive system, 2-4 chambered, and muscles.

Class Mammalia- Animals in this class have a four-chambered heart, can separate food and air in there throat, and have a lower jaw the is one piece.

Order Cetacea- Mammals in this order have a basically hairless body, layer of blubber, reproductive organs, and a chambered stomach.

Family Delphinidae- Animals in this family usually have curved fins, are very intelligent, able to adapt quickly and flexibly in different situation.

Genus Turiops- This genus only includes the bottlenosed dolphin.

Speices- Turiops truncatus

General Description

Length: Dolphins on average are 84-140 cm at birth, adult males are 244-381 cm, adult females are 228-366 cm.

Weight: Dolphins on average weigh 14-20 kg at birth, adult males weight about 500 kg,adult females weight about 250 kg.

Color: Dolphins are black to light gray on their sides, white on their bellies, and occasionally with a slight pink hue.

Natural range: Bottle-nosed dolphins can be found in the Indian ocean, Atlantic ocean, Pacific ocean, Mediterranean sea.

Diet: Inshore bottle-nosed dolphins eat fish and invertebrates near shore, deep water dolphins eat squid and pelagic fish, Atlantic bottle-nosed dolphins eat croakers, spot fish, sliver perch, South African dolphins eat mass-bankers, olive grunters, Pandora. They get their food by using ecolocation calls to stun their prey.

Habitat description: Bottle-nosed dolphins can be found everywhere but polar waters. Bottle-nosed dolphins are in bays, open shorelines, and estuarine rivers. Also bottle-nosed dolphins live in water from 50 and 90 degrees.

Predators: Dolphins have some predtors such as larger sharks like tiger sharks, and dusky sharks. Also, stringrays recently have been causing deaths to bottle-nosed dolphins.

Life spand:male dolphin can live around 40-45 years, female dolphins can live 50 or sometimes over 50 years.

Physical Adaptations

Bottle-nosed dolphins have a tail which helps them swim in water. Also, dolphins have flippers to keep them balanced and also help them swim better and faster. This helps them do a lot of other things they do to survive. To keep the bottle-nosed dolphins warm under water they have a layer of blubber. This helps keep in as much body heat as posible. This type of dolphin also has teeth. Their teeth help them break down prey and chomp them clearly. Bottle-nosed dolphins have glossy skin to help them glide through water easily and clamly. This will help them get away from predators and get their food more easily. Dolphins have triangular fins to cut through the water to let them swim more easily and live better under water.

Behavorial Adaptations

Bottle-nosed dolphins need to breath in order to stay alive. So, dolphins know when to come up so they can breath. Also, dolphins need to be able to swim so they can stay up and not sink. And dolphins need to swim to get their prey and get away from predators. They are born with this ability. Another thing they do is they swim in pods to caught prey more easily. A pod is a group of dolphins. Bottle-nosed dolphins still sleep but their minds slow down in order for them to stay consious. This is important for the animal so it can get sleep and still go up to breath. Also, dolphins use echololaction which tells the size and speed and sometimes the direction its prey is moving. This also helps bottle-nosed dolphins get prey more easily because their sense of smelling is very low. Also, their sense of eyesight is good but they can't see as many colors as humans. Also, dolphins can communicate by making clicking noises. They know many different noises and they help them work with the other dolphins and call for help.



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Burton, M. (2002). Bottle-nosed-dolphin. In International wildlife encyclopedia (3rd ed., Vol. 2, pp. 266-268). New York, NY: Marshall Cavendish.

Jenkins, J. 2009. "Tursiops truncatus" (On-line), Animal Diversity Web. Accessed March 11, 2015 at