Spinner Dolphin confirmed 2 months ago

Hammerhead Channel

Mirissa · Sri Lanka

A deep offshore channel south of Mirissa where thermoclines and opposing currents create upwellings that attract scalloped hammerhead sharks in loose schools, particularly during the transition months of November and April. Depths push well past 30 metres and currents can be fierce, making this a site for experienced divers comfortable with open-water conditions and limited visibility at depth. The reward is one of the very few places in the Indian Ocean where schooling hammerheads can still be reliably encountered.

Conditions

Depth

20 to 40 m

Advanced depths

Current

Often strong

Can pick up on the edge

Visibility

6 to 12 m

Clearest in the calm season

Water

25 to 29°C

3mm wetsuit

Month by month

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Water (°C)	25	25	26	27	27	26	26	26	26	26	26	25
Vis (m)	12	15	15	12	8	6	6	6	8	10	12	12
Current	Strong	Moderate	Moderate	Strong	Strong	Strong	Strong	Strong	Moderate	Moderate	Moderate	Strong