Segmentation by type differentiates seaweed‑based inks according to their carrier chemistry, which determines processing requirements and end‑product performance. Water‑based inks dominate the segment, offering high solvency, low VOC emissions and compatibility with conventional print equipment, thus constituting the core of market growth. Solvent‑based formulations, although smaller, provide superior adhesion on non‑porous substrates and are favored in niche automotive and industrial marking where durability outweighs environmental concerns. UV‑curable seaweed inks, an emerging sub‑type, leverage photoinitiated polymerization to achieve rapid drying and enhanced resistance to abrasion, positioning them for high‑speed printing applications despite higher capital costs. The relative weight of each type is dictated by regulatory trends, infrastructure readiness and cost‑effectiveness, collectively informing the overall market size and future investment focus.