It`s also a treasure trove of underwater wonders. The country`s pristine coastline, warm waters, and vibrant marine life make it a top destination for diving and snorkeling enthusiasts. In this article, we`ll explore the best spots, marine life, and tips for an unforgettable diving and snorkeling experience in Sri Lanka. Sri Lanka is committed to marine conservation. Ensure you follow responsible diving and snorkeling practices, such as not touching or damaging coral and disposing of your trash properly. Diving and snorkeling conditions vary by season. The west coast is best from November to April, while the east coast is ideal from May to October. Do some research before planning your trip.