Table 1.

The mean number of Red Sea ghost crabs (Ocypode saratan) of various sizes and their activity on tourist, naval and closed beaches.

	Tourist beach				Navy beach				Closed beach				Kruskal–Wallis
	Mean ± SE	Median ± mad	N	range	Mean ± SE	Median ± mad	N	range	Mean ± SE	Median ± mad	N	range	H*	p
Pyramid	11.64 ± 1.99	11.50 ± 2.22	80	8–15	14.92 ± 2.11	15.00 ± 2.22	262	10–19	15.46 ± 2.92	15.50 ± 2.97	463	5–22.5	114.22	< 0.001
Entrance	17.95 ± 0.89	16.20 ± 5.39	80	3.99–53.41	22.83 ± 9.59	21.21 ± 10.48	262	5.89–60.08	25.77 ± 10.62	24.74 ± 10.48	463	2.75–67.15	43.68	< 0.001
Crabs	3.81 ± 0.81	4.0 ± 0.0	21	2.0–6.0	12.48 ± 2.56	13.0 ± 2.97	21	8.0–16.0	22.14 ± 2.52	22.0 ± 2.97	21	18.0–27.0	53.82	< 0.001
Distance	1.45 ± 0.65	1.50 ± 0.74	80	0.3–3	7.17 ± 2.06	7.00 ± 2.22	262	2.5–13	7.99 ± 2.31	8.00 ± 2.97	463	2.5–14.5	227.6	< 0.001

The Kruskal–Wallace test was performed for standardized values.