The Atlantic surfclam (Spisula solidissima) is an economically important fisheries species in the mid-Atlantic region of the United States. Although not widely commercially practiced, there is potential to diversify surfclam products brought to market through aquaculture production. Although aquaculture farms are often established in protected coastal areas, farming in the open ocean presents an opportunity to farm shellfish where space is less competitive, water quality is often higher, and where species naturally occur. Here, we have collaborated with fishing industry partners to provide information about the potential for the surfclam to be cultivated at commercial scales in the open ocean. We conducted two deployments of over 300,000 hatchery reared seed-sized (15mm shell length) surfclams in fall 2023 and spring 2024 in federal waters off the coast of Atlantic City, New Jersey. Surfclams were deployed in large steel cages (1.2 x 1.2 meters). Within the cages, surfclams were contained within plastic mesh Hexcyls, often used on oyster longline farms. To determine the effects of stocking density on surfclam growth, surfclams were stocked at five different stocking densities ranging from 266 to 1,995 clams per hexyl (average shell length 14.68 +/- 2.70 mm) in the fall, and from 118 to 880 clams per hexly (average shell length: 21.74 +/- 5.3 mm) in the spring. Surfclam cages from both deployments were retrieved in August 2024. Surfclam growth rates were comparable what would be expected in natural populations, indicating the potential for offshore aquaculture to be used for the commercial production of a steamer (55mm) sized surfclam product. Additionally, preliminary results suggest that lower stocking densities result in faster growth rates of surfclams. This collaborative research effort will provide information about the potential to produce surfclams in offshore aquaculture farms, making use of new growout areas that have environmental conditions that reflect the natural habitats for this species.