Table 3. PERMANOVA repeated measures analysis examining survival of Tripneustes gratilla at day 18, 25 and 46 after settlement to natural biofilm plates and Sargassum linearifolium conditioned seawater.

Source	df	MS	F	P	Unique Permutations
Treatment	1	2.0806×106	13.439	0.0016	9838
Time	2	3.1743×107	205.04	0.0001	9955
Treatment × Time	2	1.4361×106	9.2763	0.0023	9957
Residual	24	1.5482×105
Total	29

Significant differences (P<0.05) are in bold; df, degrees of freedom, MS, mean square.