Management Team

Ray "The Main Man" Simon
General Manager
Ray has been the owner of The Scuba Center in Camp Pendleton, CA since 1993 and opened his second shop, the Oceanside Scuba and Swim Center in 2011. Having started his diving recreationally overseas in 1974 while serving with the United States Marine Corps, he became a dive professional in 1986. Once retired from the USMC, he decided that owning a Scuba shop was how he would spend his retirement. He has traveled the world, diving numerous exotic places.
Ray is a PADI Course Director, DAN Instructor Trainer, an Atlantis/Dolphin Rebreather Instructor Trainer as well as Tec-Deep Instructor Trainer.
As one of only a dozen PADI Course Directors in the state of California, he has a reputation for extensive experience, vast dive knowledge, and strong, honest business practices.


Kelly Brock
Store Manager
An import from Texas who brings with her a long history and successful career in the diving industry.  Diving since she was 10 years old, Kelly has the know-how and the energy to make anyone want to give diving a try. 


Monica Hayes
Lead Sales Associate

Monica joined the Oceanside Crew in Spring of 2014 as our lead swim instructor.  When Monica is not teaching our little swimmers she works on the sales floor helping all our Scuba Crew.  Monica also had her first baby boy Nathan Hayes in the Spring of 2015. Monica will be getting her Open Water certification soon! 



Dave Volkman  
Dave is a PADI Master SCUBA Diver Trainer and DAN Oxygen/HMLI Instructor. He has been diving for over 10 years and instructing for two. He is a specialty Instructor for: Enriched Air Nitrox, Deep Diver, Wreck Diver, Digital Underwater Photographer, Suunto Computer-Assisted Diving, & Equipment Specialist. 


Jesse Machio
Master Scuba Diver Trainer
Jesse received his Open Water Certification in 2002 and continued on to earn his DiveMaster in 2003. After countless dives Jesse decided to become an instructor so he could share his passion with others. Jesse’s knowledge and passion for diving is contagious.


Gerry Sahagun
Gerry is a Master Scuba Diver Trainer and has been a PADI professional since 2011. He has been a certified diver for over 40 years. He was born and raised in Southern California so most of his diving has been in Southern California and the Channel Islands. He enjoys sharing his passion for diving with new and experienced divers. His specialties include Night Diver, Deep Diver, Wreck Diver, Drysuit Diving, and Digital Underwater Photography. He is also an expert underwater hunter.


Lisa Olimpio
Master Scuba Diver Trainer 
Lisa is a Master Scuba Diver Trainer and has been an Instructor since 2012. She is originally from New England where she grew up swimming and body surfing in the cold Atlantic waters off Maine and New Hampshire. Once she was introduced to diving in Southern CA, she worked towards becoming an instructor in just a few years. She especially enjoys the Open Water Scuba classes, teaching new students to become safe, competent divers and also to be ambassadors of the oceans. Her specialties include Wreck Diver, Underwater Navigator, Deep Diver, Enriched Air Diver, Search and Recovery Diver and Dive Against Debris.


Rich Karren
Master Instructor

Originally from northern Utah, Rich had a desire to learn to dive from a young age. After enlisting in the Marine Corps he got stationed in Okinawa, Japan and obtained his Open Water certification in January 2001. Rich became an OWSI and MSDT in 2013. When he wasn’t at work, he was in his “other office” teaching SCUBA. He has progressed to become a PADI Master Instructor and is aspiring to one day become a PADI Course Director. Rich is a Specialty Instructor for 19 different specialties, which include 5 “Distinctive” specialties
including Sea Turtle Awareness and Shark Conservation, two subjects he is very passionate about. He enjoys all types of dives including Technical and Sidemount.


Fernando Pineda
Master Scuba Diver Trainer
Being born in Acapulco, Fernando spent his early years fascinated with the underwater world. During his diving career, he’s had the opportunity to dive in many local and exotic destinations. Roatan being his favorite place to visit. Locally, he enjoys diving with sea lions. His favorite specialty is night diving and seeing the underwater world come to life after sunset! Fernando has been a PADI professional since 2009, always providing the best experience to his students, while promoting underwater conservation. His motto is “just keep swimming, just keep swimming…” from Finding Nemo movie.


Ben Mitsuno  
Instructor/Lead Repair Tech
Ben is the man. That is all. 


Dennis Cline
Dennis is a retired Army Colonel and Public School Teacher with a love of dive travel and helping others enjoy the sport.  He specializes in difficult certifications for those who may need that "Special Touch" to feel comfortable. An Instructor since 2007, he is a Master Scuba Diver Trainer with specialties in Diver Propulsion Vehicles, Dry Suit, Wreck Diving, Drift Diving, Underwater Navigator, Night Diver, and Enriched Air diving. 
He is a DAN Oxygen Instructor and CPR First Responder Trainer. 
He also holds a Boy Scouts of America Certification for the Scuba Diver Merit Badge.

DiveMasters and Assistant Instructors

Frank Keefe
Started diving in 1987 in Rhode Island. His favorite course to take was Advanced Open Water because he loved that you got a taste of multiple different specialties. He joined the Oceanside Crew as a Divemaster in April of 2015. His favorite local dive spot is Catalina Dive Park.


Darin Taylor


Chris White
Originally from England, Chris began diving 27 years ago. A DiveMaster, master scuba diver, firefighter and paramedic, Chris holds 10 PADI specialties and is an avid wreck diver.


Cliff Yee
Cliff received his PADI Open Water certification in Okinawa, Japan in 1999 while stationed there with the Marines, and has been an avid diver ever since. An accomplished underwater photographer, his favorite locations to dive have been in Asia, but has found California diving to have its charms, too. He looks forward to sharing his experience and knowledge with new divers.


Cecily Kelly
An inspiring instructor working her way through dive master.
Originally from Australia has lived in 6 different countries around the world but is happy to call So Cal home! Obsessed with the ocean!
She is an enthusiastic diver, surfer and beach bum. 


Robert Primmer
I began scuba diving in 2013 at Camp Schwab, Okinawa Japan. Some of my favorite dive site were Gorilla Chop, Mydia Point, and Recon Island. My favorite specialty courses are Rescue and Drysuit. I started diving because my father in the Navy was a diver and because of the ocean in Hawaii. Ever sense I can remember I've always loved the ocean. I have a total of 9 certifications. I have so much more to learn. After all, 71% of the Earth's surface is water so why not go and explore it.


Lindsay Scott
Assistant Instructor
Lindsay, our “fun size” Instructor and Training Director has been certified since 2006 and is just that, FUN! She enjoys all water sports and is fascinated by marine life. She plans to volunteer and eventually work in Marine Science studying marine mammal behavior.  Since 2011, Lindsay has worked her way to Assistant Instructor.