Kelp farming is gaining acceptance as a low-impact way to support healthier oceans, coastal economies and more sustainable food systems. Unlike many land crops, kelp doesn’t require freshwater, fertilizer, pesticides or farmland. It grows in seawater, using sunlight and naturally occurring nutrients.

According to NOAA Fisheries, seaweed farming is the fastest-growing aquaculture sector and can benefit farmers, communities and the environment. NOAA also notes that seaweed farms may help improve water quality, create habitat for marine life and support working waterfronts by giving fishers another seasonal income stream.

Kelp is already used in foods, supplements, skincare, animal feed and emerging alternatives to plastic packaging. While it’s not a single solution to climate change or ocean health, it offers a promising example of regenerative ocean farming—working with natural systems rather than against them. As interest grows in sustainable food and coastal resilience, this humble sea vegetable may become one of the ocean’s quiet overachievers.