Table 4.

Relative richness of reef fish faunas of small islands vs. those of much larger adjacent areas

Small island	Larger adjacent area	Small island habitat area		Small island fauna, % of larger area fauna
		km2	% of larger adjacent area
Cocos	Galapagos	≈6*	≈0.9*	79.1
Malpelo	Galapagos	≈0.1*	≪0.1*	71.5
Gorgona	Costa Rica–Ecuador†	14*	<0.1*	57.6
Navassa	Four West Caribbean atolls	≈8	≈0.2	80.0
Rose Atoll	Four Samoan islands	≈7	≈0.7	67.1
Pitcairn	Tuamotu Islands	≈8	<0.1	66.2
Rapa	Tuamotu Islands	<10	<0.1	61.6

^*Habitat data are from hydrographic charts and ref. 34. * indicates areas of reef rather than total habitat; remaining areas are of total habitat. 

^† Continental coastline. Data for faunas: Cocos, Malpelo, and Gorgona are from refs. 11–13, 35, and 36, and www.biobase.org/cloftep/; Navassa (Eastern Caribbean) are from B. Collette (personal communication); Rose Atoll are from A. Green (personal communication); Pitcairn and Rapa (South Pacific) are from refs. 10, 18, and 37.