Identifying these “aquaculture opportunity areas” is part of a decade-long federal plan to open the Gulf and other offshore areas to aquaculture. The plan got a strong push from Trump but slowed under President Joe Biden’s administration, which concludes next month.

Three of NOAA’s preferred aquaculture areas are off the coast of Texas and one is south of Louisiana. Each area ranges from 500 to 2,000 acres and could total 6,500 acres. A fifth area, considered a possible alternative, has been identified near the mouth of the Mississippi River, but it would likely conflict with shipping traffic and shrimping in that area.