Borneo 20 days (Exploring, Diving and Surfing)

Hi,

I will be on Holidays at the end of October and begining of November aproximately about 20 days. I was wondering if Borneo is a good place to explore natural spots also good beaches, do some good diving and also surfing.

I was already in Bali and Philippines, so I am looking for a similar places to do similiar activities because I love Asian adventures.

I really appreciate your recommendations.

Thank you in advance guys¡