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Marine mammals are aquatic mammals that rely on the ocean and other marine ecosystems for their existence. They include animals such as seals, whales, manatees, sea otters and polar bears. They are an informal group, unified only by their reliance on marine environments for feeding and survival.
Bottlenose dolphins are aquatic mammals in the genus Tursiops. They are common, cosmopolitan members of the family Delphinidae, the family of oceanic dolphins. Molecular studies show the genus definitively contains two species: the common bottlenose dolphin and the Indo-Pacific bottlenose dolphin. Others, like the Burrunan dolphin, may be alternately considered their own species or be subspecies of T. aduncus. Bottlenose dolphins inhabit warm and temperate seas worldwide, being found everywhere except for the Arctic and Antarctic Circle regions. Their name derives from the Latin tursio (dolphin) and truncatus for their characteristic truncated teeth.
Whale watching is the practice of observing whales and dolphins (cetaceans) in their natural habitat. Whale watching is mostly a recreational activity, but it can also serve scientific and/or educational purposes. A study prepared for International Fund for Animal Welfare in 2009 estimated that 13 million people went whale watching globally in 2008. Whale watching generates $2.1 billion per annum in tourism revenue worldwide, employing around 13,000 workers. The size and rapid growth of the industry has led to complex and continuing debates with the whaling industry about the best use of whales as a natural resource.
The tropical bottlenose whale, also known as the Indo-Pacific beaked whale or Longman's beaked whale, was considered to be the world's rarest cetacean until recently, but the spade-toothed whale now holds that position. As of 2010, the species is now known from nearly a dozen strandings and over 65 sightings. This is the only species in the genus Indopacetus.
The four-toothed whales or giant beaked whales are beaked whales in the genus Berardius. They include Arnoux's beaked whale in cold Southern Hemispheric waters, and Baird's beaked whale in the cold temperate waters of the North Pacific. A third species, Sato's beaked whale, was distinguished from B. bairdii in the 2010s.
The northern bottlenose whale is a species of beaked whale in the ziphiid family, being one of two members of the genus Hyperoodon. The northern bottlenose whale was hunted heavily by Norway and Britain in the 19th and early 20th centuries. It is one of the deepest-diving mammals known, reaching depths of 2,339 m (7,674 ft) and capable of diving for up to 130 minutes.
The Indo-Pacific bottlenose dolphin is a species of bottlenose dolphin. This dolphin grows to 2.6 m (8.5 ft) long, and weighs up to 230 kg (510 lb). It lives in the waters around India, northern Australia, South China, the Red Sea, and the eastern coast of Africa. Its back is dark grey and its belly is lighter grey or nearly white with grey spots.
The melon-headed whale, also known less commonly as the electra dolphin, little killer whale, or many-toothed blackfish, is a toothed whale of the oceanic dolphin family (Delphinidae). The common name is derived from the head shape. Melon-headed whales are widely distributed throughout deep tropical and subtropical waters worldwide, but they are rarely encountered at sea. They are found near shore mostly around oceanic islands, such as Hawaii, French Polynesia, and the Philippines.
The common bottlenose dolphin or Atlantic bottlenose dolphin is a wide-ranging marine mammal of the family Delphinidae. The common bottlenose dolphin is a very familiar dolphin due to the wide exposure it gets in captivity in marine parks and dolphinariums, and in movies and television programs. It is the largest species of the beaked dolphins. It inhabits temperate and tropical oceans throughout the world, and is absent only from polar waters. While formerly known simply as the bottlenose dolphin, this term is now applied to the genus Tursiops as a whole. As considerable genetic variation has been described within this species, even between neighboring populations, many experts think additional species may be recognized.
Whale and Dolphin Conservation (WDC), formerly Whale and Dolphin Conservation Society in the UK, is a wildlife charity that is dedicated solely to the worldwide conservation and welfare of all whales, dolphins and porpoises (cetaceans). It has offices in the UK, North America, Germany and Australia.
The Port River is part of a tidal estuary located north of the Adelaide city centre in the Australian state of South Australia. It has been used as a shipping channel since the beginning of European settlement of South Australia in 1836, when Colonel Light selected the site to use as a port. Before colonisation, the Port River region and the estuary area were known as Yerta Bulti by the Kaurna people, and used extensively as a source of food and plant materials to fashion artefacts used in daily life.
The Tethys Research Institute is a non-profit research organisation founded in 1986 to support marine conservation through science and public awareness and by participating in the international conservation process. Tethys' activities are mainly carried out in the Mediterranean Sea, although research programmes have been conducted also in the Black Sea, the North Atlantic Ocean, the Caribbean, the Red Sea and Antarctica. The results of these activities have been presented in scientific publications as well as in meetings, workshops and conferences.
The southern bottlenose whale is a species of whale, in the Ziphiid family, one of two members of the genus Hyperoodon. Seldom observed, the southern bottlenose whale is resident in Antarctic waters. The species was first described by English zoologist William Henry Flower in 1882, based on a water-worn skull from Lewis Island, in the Dampier Archipelago, Western Australia. They live in deep ocean waters over 1000 meters.
Erich Hoyt is a whale and dolphin (cetacean) researcher, conservationist, lecturer and author of 26 books and more than 700 reports, articles and papers. His book Marine Protected Areas for Whales, Dolphins and Porpoises, has been widely reviewed as the "definitive reference of the current extent of cetacean ecosystems-based management" and as "a unique and essential book for anybody interested in the conservation and protection of cetaceans. [This] definitive source on MPAs marine protected areas for cetaceans…will influence the design and management of this important and rapidly developing conservation tool." Choice listed the book as an "Outstanding Academic Title’ for the year 2012. Since 2013, as Research Fellow with Whale and Dolphin Conservation (WDC) and IUCN SSC/WCPA Marine Mammal Protected Areas Task Force co-chair with Giuseppe Notarbartolo di Sciara, Hoyt has focussed on the creation and development of the new conservation tool of Important Marine Mammal Areas, or IMMAs. In 2016, following a MAVA Foundation pilot project to identify IMMAs in the Mediterranean, the Task Force's GOBI collaboration funded by the German Climate Initiative (IKI) began a six-year project to identify and implement IMMAs across most of the southern hemisphere. The IMMA tool has been received and widely endorsed by the Convention on Migratory Species (CMS), the Convention on Biological Diversity (CBD), various commissions within the International Union for Conservation of Nature (IUCN), the International Whaling Commission, as well as national governments and scientists.
Whale watching in New Zealand is predominantly centered around the areas of Kaikōura and the Hauraki Gulf. Known as the 'whale capital', Kaikōura is a world-famous whale watching site, in particular for sperm whales which is currently the most abundant of large whales in New Zealand waters. The Hauraki Gulf Marine Park is also a significant whale watching area with a resident population of Bryde's Whales commonly viewed alongside other cetaceans Common Dolphins, Bottlenose Dolphins and Orca. Whale watching is also offered in other locations, often as eco-tours and in conjunction with dolphin watching. Land-based whale watching from New Zealand's last whaling station, which closed in 1964, is undertaken for scientific purposes, mostly by ex-whalers. Some compilations of sighting footages are available on YouTube.
Adelaide Dolphin Sanctuary (ADS) is a marine protected area in the Australian state of South Australia located on the east coast of Gulf St Vincent in and adjoining the north-western part of Adelaide, covering the estuary of the Port River around Port Adelaide and northwards past St Kilda. It was established in 2005 for the protection of a resident population of Indo-Pacific bottlenose dolphins.
Cetaceans form an infra-order of marine mammals. In 2020, approximately 86 species of cetaceans had been identified worldwide. Among these species, at least 35 have been sighted in the wider Caribbean region with very widespread distribution and density variations between areas. Caribbean waters are a preferred breeding site for several species of mysticeti, who live further north the rest of the year. The tucuxi and the boto live at the southern periphery of the Caribbean region in the freshwaters of the Amazon river and surrounding drainage basins.
References
- 1 2 3 "Dr Michael Ion Bossley". Australian Honours Search Facility. Retrieved 4 April 2022.
- 1 2 3 4 5 Eisfeld-Pierantonio, Sonja (28 June 2015). "The things we do at WDC Australasia". Whale & Dolphin Conservation Australia. Retrieved 5 April 2022.
- ↑ Bossley, Mike (9 April 2021). "Catching up with old friends of the Port River dolphins". Whale & Dolphin Conservation Australia. Retrieved 5 April 2022.
- 1 2 "Dolphins, Whales & Me, by Mike Bossley". Moonglow Publishing. ISBN 9780645299526 . Retrieved 6 October 2022.
- ↑ Blue Swimmer No. 29, April 2019. Friends of Gulf St Vincent. Retrieved 6 October 2022.
- ↑ Current committee - Life Members Friends of Gulf St Vincent. Retrieved 6 October 2022.
- ↑ "It's an honour". honours.pmc.gov.au. Retrieved 4 April 2022.