This could be literarily a Once Of A Lifetime chance! When we were searching for blue whales about 20 nautical miles offshore of Mirissa, Sri Lanka, we encountered this sperm whale fleet. There were over a hundred of them, dividing into smaller groups of about 10 to 13 each. Obviously they were not hunting for giant squids there because they were not making deep dives at all. Instead, they kept traveling, looking like going to some kind of party somewhere. No male sperm whale were spotted.
Facts about Mirissa

• It is in Sri Lanka
• Mirissa is in the Indian Ocean.
• The typical depth is 0-10 Metres 0-30 Feet.
• The typical visibility is 10-30 Metres 30-100 Feet.