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Bottlenose Dolphin

 
Introduction:

The Bottlenose Dolphin is found right around the coast of Australia and can sometimes be seen catching waves with surfers in Sydney.

Identification:

The Bottlenose Dolphin has a short rounded snout, described as bottle-shaped, a smooth rounded melon. The large dorsal fin is slightly hooked and set half way along the body. Overall the body colour is a series of grey tones with an indistinct paler grey wash on the flanks fading into an off-white belly. Two forms of Bottlenose Dolphin are currently recognised - the 'inshore' form and the 'offshore' form, which could possibly be different species. The Bottlenose Dolphin is commonly seen in groups or pods, containing anything from two or three individuals to more than a thousand.

Size:

2 m - 4 m

Distribution:

The Bottlenose Dolphin is found worldwide in temperate and tropical waters.

Habitat:

The Bottlenose Dolphin lives in coastal waters and oceans. They are resident or frequent inhabitants of bays and coastal areas. In some areas populations will maintain defined home ranges within recognised coastal landforms. Others are pelagic animals, found well out to sea, often off or quite close to a continental shelf edge. This species occupies a broader range of habitats than any other marine mammal.

Feeding and Diet:

The Bottlenose Dolphin occupies a wide range of habitats, giving it access to a huge variety of organisms including invertebrates, bottom-dwelling fish and squid, plus the full range of pelagic (oceanic) fish species. Bottlenose Dolphins are a very social species and feed together, although they are known to feed alone. They also take advantage of human-induced prey abundance and regularly approach fishing trawlers.

Communication:

Bottlenose Dolphins communicate using clicking sounds and echolocation.

Conservation Status:

The Bottlenose Dolphin is still an abundant species, despite incidental kills by the fishing industry. However, habitat degradation and pollution are of increasing concern for Bottlenose Dolphins.
Related Objects:

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M.33286 - Tursiops truncatus (Montagu, 1821) ,
M.33595 - Tursiops truncatus (Montagu, 1821) ,
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PA.277 - Tursiops truncatus (Montagu, 1821) ,
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PA.280 - Tursiops truncatus (Montagu, 1821) ,
PA.305 - Tursiops truncatus (Montagu, 1821) - Australia, New South Wales, Bega , (36 41' S , 149 51' E),
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(c) assumed Australian Museum.

S.1267 - Tursiops truncatus (Montagu, 1821) - Australia, New South Wales, Dee Why Beach, 0.5 mile from sea , (33 45' S , 151 16' E),

(c) assumed Australian Museum.

S.1555 - Tursiops truncatus (Montagu, 1821) - Australia, New South Wales, La Perouse, Botany Bay, Sydney , (33 59' S , 151 14' E),

(c) assumed Australian Museum.

S.2097 - Tursiops truncatus (Montagu, 1821) - Australia, Western Australia, PELSART ID HOUTMANS ABROLHOS , (28 54' S , 114 E),

(c) assumed Australian Museum.

S.277 - Tursiops truncatus (Montagu, 1821) ,

(c) assumed Australian Museum.

S.476 - Tursiops truncatus (Montagu, 1821) ,

(c) assumed Australian Museum.

S.477 - Tursiops truncatus (Montagu, 1821) ,

(c) assumed Australian Museum.

S.478 - Tursiops truncatus (Montagu, 1821) ,

(c) assumed Australian Museum.

S.1473 - Tursiops truncatus (Montagu, 1821) - Australia, New South Wales, Morora, near Clarence R entrance , (29 20' S , 153 14' E),
PA.306 - Tursiops truncatus (Montagu, 1821) ,

(c) assumed Australian Museum.

B.10527 - Tursiops truncatus (Montagu, 1821) - Australia, New South Wales, Port Jackson, Sydney , (33 51' S , 151 16' E),

(c) assumed Australian Museum.

S.1778 - Tursiops truncatus (Montagu, 1821) - Australia, Queensland, CAPE CLEVELAND NR TOWNSVILLE , (19 11' S , 147 1' E),
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M.35166.003 - Tissue sample - Tursiops truncatus (Montagu, 1821) - Australia, New South Wales, Stanwell Park Beach , (34 13' 9" S , 150 59' E), 14 Nov 2000
M.35166.004 - Tissue sample - Tursiops truncatus (Montagu, 1821) - Australia, New South Wales, Stanwell Park Beach , (34 13' 9" S , 150 59' E), 14 Nov 2000
M.43391 - Tursiops truncatus (Montagu, 1821) - No further data ,
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(c) assumed Australian Museum.

B.10526 - Tursiops truncatus (Montagu, 1821) - Australia, New South Wales, Port Jackson, Sydney , (33 51' S , 151 16' E),
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M.12402 - Tursiops truncatus (Montagu, 1821) - Australia, New South Wales, Newport Beach, Sydney , (33 39' S , 151 19' E), 1971
M.19767 - Tursiops truncatus (Montagu, 1821) - Australia, New South Wales, Minnie Water, 40 km N of Woolgoolga , (29 47' S , 153 17' E), 19 Jul 1977
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M.22838 - Tursiops truncatus (Montagu, 1821) - Australia, New South Wales, Hat Head near Kempsey, 32 km S of Coffs Harbour , (31 4' S , 153 3' E), Feb 1984

(c) assumed Australian Museum.

M.22865 - Tursiops truncatus (Montagu, 1821) - Australia, New South Wales, Umina/Ettalong Beach, S of Woy Woy , (33 32' S , 151 19' E), 31 Dec 1984

(c) assumed Australian Museum.

M.22971 - Tursiops truncatus (Montagu, 1821) - Australia, New South Wales, Laurieton , (31 39' S , 152 48' E), 19 Mar 1986

(c) assumed Australian Museum.

M.23 - Tursiops truncatus (Montagu, 1821) ,
M.25870 - Tursiops truncatus (Montagu, 1821) - Australia, New South Wales, S of Black Rocks, Bundjalung National Park , (29 17' 11" S , 153 20' 49" E), 29 Jul 1991
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