Question: things to do kona side?
Answer: Snorkel Kealakekua Bay. ... 
Night scuba (or snorkel) with the manta rays. ... 
Visit the summit of Mauna Kea. ... 
Ocean Rider Seahorse Farm. ... 
Kaloko-Honokohau National Historical Park. ... 
Tour a coffee plantation. ... 
See historic Kona town.