Generally reached by dhow, Wasini Island is a popular day trip from Mombasa. Dolphins regularly cruise these waters, and passengers can stop to snorkel and dive the coral reefs along the way. The island itself is tiny – only five square kilometers. Sightseeing opportunities include visiting Wasini Village, strolling around the coastal scrub where ancient Swahili ruins lie, exploring the exposed coral gardens, and dining on fresh seafood. The village of Shimoni is the launching point for Wasini Island tours and was once the headquarters of the Imperial British East Africa Company. Here, visitors can explore the Shimoni Caves, thought to hold slaves before their shipment to Arabia.