Table 3. Reported population sizes of humpback dolphins in the genus Sousa around the world.

Species	Location	Time	Population size1)	Reference
Sousa teuszii	Banc d'Arguin, Mauritania	1997–2006	<100	40
	Saloum Delta, Senegal	1997–2006	Low hundreds	40
	Canal do Gêba and Bijagos Archipelago, Guinea-Bissau	1997–2006	Several hundred	40
Sousa plumbea	Algoa Bay, South Africa	1991–1994	466	13
	Richards Bay, South Africa	1998	74	41
	Maputo Bay, Mozambique	1995–1997	105	42
	Bazaruto Bay, Mozambique	1990s	60	43
	Anakao, Madagascar	1999	65	44
	South coast of Zanzibar, Tanzania	1999–2002	63	45
	Shimoni Archipelago, Kenya	2006	104	46
	Saudi–Bahrain–Qatar	1986	(16 groups)	47
	United Arab Emirates	1986	(13 groups)	47
	United Arab Emirates	1999	(2 groups)	47
	Arabian Sea coast of Oman		(Groups of 30 individuals or more)	48
	Jubail, Saudi Arabia	1991–1993	(50 groups, 1–15 individuals)	49
	Indus Delta, Pakistan	2005–2009	Low hundreds	50
	Gulf of Kachchh Marine Protected Area, Gujarat, India	2002	21	51
	Goa, India	2002	135	51
Sousa chinensis	Between the Sundarbans mangrove forest and the Swatch-of-No Ground submarine canyon, Bay of Bengal, Bangladesh	2010–2011	191	52
	Khanom, Nakhon Si Thammarat, Thailand	2008–2009	49	53
	Xiamen	2004–2008	76	54
	Central west coast of Taiwan	2002–2004	99	55
	Pearl River Estuary	2005–2008	2517–2555	14
	Zhanjiang	2005–2012	1485	This study
	Beibu Gulf	2003–2004	153	54
Sousa spp.2)	Moreton Bay, Queensland	1984–1987	119–163	56
	Great Sandy Strait, Queensland	2004–2007	150	11
	Capricorn-Curtis coast, Queensland	2007–2011	Approximately 150	57
	Cleveland Bay, Queensland	2001–2002	<100	34
	North West Cape, Western Australia	2010	53 identified individuals	58

¹⁾Number of groups and group size in parentheses,

²⁾The Australian humpback dolphins are an as-yet-unnamed species of Sousa¹².