The owners of Pilli-Pipa, Harm and Selina, are both qualified PADI MSDT Dive Instructors and First Aid Instructors with numerous specialities. Selina has a BSc. Hons in Marine and Freshwater Biology and a Masters degree in Aquaculture from Stirling University. They have both worked as diving instructors in many countries including Jamaica, Thailand, Malta, England, Holland and Kenya before settling on Wasini Island. Harm speaks fluent Dutch, German and English while Selina speaks in French, German, Italian, Spanish, English and Kiswahili.

Harm takes care of the maintenance of engines and equipment, but still enjoys diving and on the odd occasion will lead dives. Selina dives more often and has a keen eye for spotting those difficult to see weird and wonderful creatures.