The name may not sound it but Corporation Beach is quintessential Cape Cod. There’s a long stretch of white sand, grassy dunes, and a rock jetty. There are also restrooms and a snack bar open during the summer. This is a good place to bring non-diving friends and family.
The jetty extends out into the water from the left end of the beach at an oblique angle, forming a small lagoon in between. The dive area lies outside the jetty. Go around it, then move straight out on a northerly or northwesterly heading. the area to the right of the end of the jetty is exclusively sand. However, straight out from the end of the jetty, or to the left, the bottom is a mix of medium-sized rocks, medium-sized boulders, and white sand, with small eelgrass beds, sprinkled in between. Depths do not exceed 20 feet. This combination – shallow water filled with sunlight, plenty of white sand to reflect that light, and enough rocks and eelgrass to keep the sand from easily rising up into the water column – adds up to a site that often has great visibility. There’s also a lot of life here. Once you move more than 200 yards offshore from the jetty, though, the rocks become smaller and the bottom, less interesting. This is the Cape’s best shore dive.
The walk from the parking lot to the beach ranges from 10 to 100 yards over the pavement. Once on the beach, entry and exit are made over sand and are easy.
This site has a Northern exposure. This site can become rough when the wind blows out of any northerly direction.
There are 2 parking lots next to the beach. If possible park in the second lot closer to the beach. There is a fee to park here during the summer.
Jerry Shine provided much of the written dive site content on the shore diving sites around New England from his 2005 publication: A Shore Diving Guide to New England which is currently out-of-print. His 2017 publication A Year Underwater: Twelve Months of Diving, Fraternizing with Marine Life, and Just Having a Great Time, from the St. Lawrence River to West Palm Beach is available for purchase on Amazon.
If lobstering be sure that you are licensed, have a gauge for the area you are lobstering in, have your numbers on your cylinder and flag, and don’t land any shorts, longs, notches, or eggers. For more information please reference the mass.gov regulations site here.