Bengal Monitor confirmed 1 month ago

Blue Whale Alley

Mirissa · Sri Lanka

A deep-water channel running southwest of Mirissa that funnels nutrient-rich upwellings and concentrates the world's largest animal in extraordinary numbers from January through April. Blue whales here feed on dense krill blooms and regularly surface within metres of snorkellers and free-divers, making this the single most reliable blue whale encounter on the planet. Sperm whales patrol the outer drop-off year-round, and pods of spinner dolphins escort boats on every run.

Conditions

Depth

15 to 40 m

Advanced depths

Current

Often strong

Can pick up on the edge

Visibility

8 to 15 m

Clearest in the calm season

Water

26 to 30°C

3mm wetsuit

Month by month

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Water (°C)	26	26	27	28	28	27	26	26	27	27	27	26
Vis (m)	15	20	20	15	10	8	8	8	10	12	12	15
Current	Moderate	Gentle	Gentle	Moderate	Strong	Strong	Strong	Strong	Moderate	Moderate	Gentle	Gentle