Family owned since 1987, we are the North Shore's scuba & snorkeling headquarters!

About Us

Family owned since 1987

We opened our doors in 1987 and have never looked back! Located on the North Shore of MA, we are smack in the middle of all of the best dive sites around. Head up to Rockport or Gloucester or out towards Marblehead and Nahant. We are a full service scuba and snorkeling center that will provide you with a wide range of PADI classes, a full repair and service center, private guided dives, dive travel adventures and of course a full compliment of rental gear and equipment sales.

Not only do we bring you the best service and knowledge, we bring fun and excitement. We are a group of fun loving people who love the ocean, underwater photography and traveling. We love to geek out about new gear and love to meet new people. Whether you are a new diver interested in starting your exploration of the big blue or a seasoned diver with years of experience we have what you need.

Taking Care of Customers


I’ve been a customer at Undersea for almost 10 years. Whitney and Shaun have been great to me; when I lived in another part of the country Undersea was still my go to shop and they made sure I got all my favorite dive gear FAST!

I just stopped by on a Friday night within an hour of closing to get a couple hoods and some dry suit stuff. Matt and Shaun started sorting through gear right away to find what I need. If you love diving as much as I do – you will love this store.

Jonathan Morneau



Every time I stop into the shop, it’s a great experience. From simple tank fills to PADI Rescue class, the staff is friendly, knowledgeable, and happy to help. Great location on my way home from diving too!

Brian Weber


Check Us Out on Socal Media

We are very active on Instagram & Facebook. Following us is a great way to never miss out on the fun.

We've Got You Covered