The Tanganekald lay to the southeast of the Jarildekald and occupied 750 square miles (1,900 km2), predominantly about the narrow coastal strip along Coorong. Norman Tindale gives the following precise locations, based on detailed work with his informant, Clarence Long (Milerum), the last full blooded adult survivor of the Tangane.
from Middleton south to Twelve Mile Point (north of Kingston); inland only to about inner margin of first inland swamp and dune terrace, the Woakwine or 25 foot (7.5 m.) terrace, usually no more than 5 to 10 miles (8 to 16 km.); on islands in Lake Alexandrina, except eastern and western extremities of Hindmarsh Island; around Meningie at south and of Lake Albert, at Salt Creek and Taratap (Ten Mile Point).
A distinction was made between (a) teŋgi - the sandy grassed limestone slopes just back of the pandalapi (Coorong lagoon) where they fished and favoured for camping, as was the southern seaward side, the pariŋari, protected by the natunijuru, duned sandhills between them and the seashore (jurli) - and the inland mallee and swamps, known as lerami, which were good for hunting.
The introduction of intensive pastoral practices, with sheep and cattle livestock, and rabbits, wrought havoc on the traditional Tanganekald landscape, leading one aged informant to grieve that,
'Our maldawuli (ancestors) told us, long, long ago, to 'beware of ants'. Whitemen must be the 'ants' he spoke of, for he has eaten away all my people, my herbs, my game, and even my sandhills.'
- Kondoliorn. (lit. 'whale men', composed of kondoli (whale) and -the suffix -orn(a contraction of korn meaning 'man, person')
Tindale recorded and transcribed many Tanganekald songs from Milerum, several of them bawdy. One story cycle describes legends associated with the people the Tanganekald regarded as having lived in their land before their arrival. These people, the Thakuni, inhabited the lagoons around the Robe district's limestone coastal area. They could render themselves invisible at will, and were the object of particular horror for their piercing eyes, which could, at a mere glance, kill a person. They could only be observed by making swift slanting gazes. These people were said to have finally driven out of their habitats by the ancestral forefathers of the tribe, who managed to drive them into the sea. There they were transmogrified either into jagged limestone boulders on the outer reefs, or became fairy penguins.
According to Tanganekald belief ancestral human-like beings, the Ŋurunderi and others, collectively referred to by the term maldawuli, were responsible, together with ŋaitje, (totemtotemic animals, consisting mostly of birds) for the creation of the landscape they now inhabit. One story in this sequence, whose events are associated with a crater near McGrath Flat homestead, concerns an aged woman, Prupe,[a] and her sister Koromarange, both of the Marntandi clan. Growing sightless, Prupe had turned cannibal and had eaten almost all of the district's children, save one, her sister's granddaughter Koakaŋgi. To save her grandchild and stave off Prupe's intrusive foraging for her, Koromarange would bring her sister food. This only made the latter suspicious and, as she went blind, she thought of taking the child to harvest her eyes so she might regain her sight. While the grandmother was netting fish, Prupe managed to kidnap her young ward, who had revealed her presence by crying out for water, and took her back to her camp. When Koromarange realized what had happened, she followed their spoors and came across Prupe, who was about to extract Koakaŋgi's eyes. Feigning fatigue she asked her sister to fetch her some restorative water, giving her a pierced skull as a water-dish, causing Prupe to lose time ladling in the water, while Koromarange contrived a snare nearby, and fled with the child. On discovering the deception, Prupe rushed forth, only to be trapped in the snare, and, kicking some live coals as she lashed out, was incinerated. The intensity of the fire caused a crater to be formed on the spot where she camped. Thus, Koromarange and her grandchild Koakaŋgi managed to get back to their beach camp
The Tanganekald were divided into the following clans:-
|Timpuruminďerar.||maluwi. (a large fish), ťili(blue fly)|
|Kargarďerar.||yalŋarinďeriorn. (bull ant), )?) kanmera.(mullet).|
- Tenggi (Potaruwutj term, actually name of the Coorong itself)
- Tangane (short form), Tanganalun, Tanganarin, Tangani.
- T(h)unga, Thungah
- Milmenrura (a clan name only; often used in early days for the whole tribe, presumably owing to the notoriety associated with their murder of survivors of the shipwrecked Maria), with the following versions: Milmendura, Milmendjuri, Milmain-jericon.
- Kalde (means language).
- Wattatonga (name applied by the Bunganditj, lit. 'men of the evening' because they live to the west).
- Brown, A. R. (July–December 1918). "Notes on the Social Organization of Australian Tribes". The Journal of the Royal Anthropological Institute of Great Britain and Ireland. 48: 222–253. JSTOR 2843422.
- Meyer, H. A. E. (1843). Vocabulary of the language spoken by the aborigines of the Southern and Eastern portions of the settled districts of South Australia: preceded by a grammar. Adelaide: James Allen.
- Monaghan, Paul (2009). "Placenames in the Norman B. Tindale collection of papers" (PDF). In Hercus, Luise; Koch, Harold. Aboriginal Placenames: Naming and Re-naming the Australian Landscape. Australian National University Press. pp. 226–250. ISBN 978-1-921-66608-7.
- Tindale, Norman Barnett (1937). "Native songs of the South East of South Australia". Transactions of the Royal Society of South Australia. 61: 107–120.
- Tindale, Norman Barnett (1938). "Prupe and Koromarange, a Legend of the Tanganekald, Coorong, South Australia". Transactions of the Royal Society of South Australia. 62: 18–24.
- Tindale, Norman Barnett (1946). "Australian (Aborigine)". In Shipley, J. T. Encyclopedia of Literature (PDF). Volume 1. Philosophical Library. pp. 74–78.
- Tindale, Norman Barnett (1974). "Tanganekald (SA)". Aboriginal Tribes of Australia: Their Terrain, Environmental Controls, Distribution, Limits, and Proper Names. Australian National University Press. ISBN 978-0-708-10741-6.