Kelp, e.g. is a term used to refer to large seaweeds of the order Laminariales. These seaweeds are found in shallow, nutrient-rich saltwater and can grow up to several meters in length. The two crossword solutions for this term are SEAWEED (7 letters) and ALGA (4 letters). SEAWEED is a general term used to describe any type of macroscopic, multicellular, marine algae, while ALGA is a more specific term used to refer to a single-celled organism. Both terms are commonly used to refer to kelp, e.g. and other types of SEAWEED.