Table 1.

ANOSIM analysis.

Sample set	Grouping	R	Significance
All sites	Strait	0.802	0.001
	Site	0.652	0.001
	Monsoon	0.005	0.340
Singapore Strait	Site	−0.072	0.498
	Monsoon	0.270	0.002
Johor Strait	Site	0.421	0.001
	Monsoon	−0.026	0.675