About Us

Since opening our doors in 1994, our business philosophy has always been to keep it small, fun and personable. We have developed a client base of repeat customers and we enjoy meeting new customers everyday. We look forward to ensuring that you enjoy your Cayman vacation to the fullest with our flexible and personal service.

With our small groups and 1 on 1 relationship’s with our divers, we develop great friendships that keep our customers coming back. So meet the folks that will make your dive vacation on Grand Cayman FUN and memorable.

Keith KellerKeith Keller

Keith has been with Neptune’s from the start as the boat captain and an instructor. Moving to Grand Cayman from Colorado in 1988, he began working for Don Foster’s Dive and quickly moved to manager before branching out to start Neptune’s Divers in 1994. Keith has been guiding and teaching divers on the island ever since. From the daily Resort Course beginners all the way through dive master, Keith is a skilled and patient instructor. Keith’s enthusiasm for the sport brings divers back again and again.

Casey KellerCasey Keller

Casey has been with Neptune’s Divers since 2000 as our manager and instructor. Hailing from chilly Connecticut, after many years of diving around the Caribbean, Casey has decided to make Grand Cayman her home. Casey’s passion for underwater photography and videography has helped many of our divers capture and bring home their wonderful underwater memories for years of enjoyment. Additionally, Casey is the person that handles our reservations either by phone or email. She goes the extra mile to ensure that your dive vacation is fun and runs smoothly.


Niall Bennieniall profile

Niall is originally from Scotland, though he has traveled and lived all over the world. He first learned to dive at the young age of 12, and has since climbed the PADI ladder up to the IDC Staff Instructor level. Diving is his passion, and he loves to see other people enjoy diving too. He especially loves pointing out the “smaller stuff”.