When it comes to discussing algae in the context of nutrition, Chlorella, Spirulina, and the brown algae Kelp are the most well-known. These marine algae are popular for their nutrient content, with particular emphasis on Vitamin B12 and iodine. Chlorophyll is also found in significant amounts in these algae. Consumption is remarkably simple and convenient, available in the form of powder, capsules, or tablets.