Table 1.

Galapagos sea lion population sizes in breeding rookeries throughout the archipelago. Estimated values are based on corrected census data using correction factors for different age categories. The 95% confidence interval of each estimate is shown in parentheses.

Region/Island	2014	2015	2016	2017	2018	% Island on Archipelago
Western 9.1%
Fernandina	1143	1008	1049	886	949	5.3
	(1027–1376)	(882–1267)	(901–1358)	(782–1097)	(837–1181)
Isabela	1001	749	680	545	777	3.8
	(886–1235)	(665–921)	(607–869)	(489–658)	(691–951)
Sum Western Region	2144	1757	1729	1431	1726
	(1914–2611)	(1547–2187)	(1508–2184)	(1271–1755)	(1528–2132)
Northern 5.7%
Pinta	483	276	428	289	1398	3.1
	(419–615)	(240–350)	(373–541)	(259–351)	(1214–1777)
Marchena	104	120	30	54	264	0.5
	(91–129)	(108–142)	(27–37)	(49–63)	(232–331)
Genovesa	544	333	306	447	297	2.1
	(471–697)	(289–427)	(264–393)	(391–562)	(264–365)
Sum Northern Region	1131	729	764	790	1959
	(981–1441)	(637–919)	(664–970)	(698–976)	(1710–2472)
Central 23.1%
Santiago	919	434	623	861	545	3.5
	(812–1136)	(383–537)	(551–770)	(763–1060)	(484–670)
Rábida	324	169	376	167	636	1.6
	(285–406)	(149–210)	(331–469)	(146–210)	(562–787)
Seymur	988	650	853	1027	883	4.6
	(880–1206)	(567–820)	(750–1063)	(907–1271)	(782–1090)
Santa Cruz	2825	1908	2788	2665	2561	13.4
	(2459–3583)	(1688–2358)	(2434–3518)	(2354–3301)	(2273–3148)
Sum Central Region	5056	3161	4640	4720	4626
	(4435–6331)	(2788–3925)	(4067–5820)	(4171–5842)	(4101–5696)
Southeastern 62.1%
Santa Fe	1289	1017	1943	1432	1395	7.4
	(1130–1617)	(903–1249)	(1705–2433)	(1282–1732)	(1255–1675)
Floreana	3682	2487	2785	3182	3070	15.9
	(3213–4651)	(2176–3126)	(2433–3510)	(2786–3997)	(2708–3811)
Española	1981	1081	1357	1293	1533	7.6
	(1752–2450)	(973–1297)	(1194–1691)	(1136–1615)	(1374–1855)
San Cristóbal	6210	6362	5935	5647	5619	31.2
	(5441–7794)	(5555–8022)	(5239–7354)	(4969–7035)	(4942–7009)
Sum Southeastern Region	13,162	10,947	12,021	11,554	11,617
	(11,534–16,512)	(9608–13,695)	(10,571–14,988)	(10,173–14,379)	(10,278–14,350)