The Guinea Current is a recognized permanent and semi-permanent ocean circulation feature in the tropical Atlantic Ocean, as evidenced by oceanographic studies of the region's large marine ecosystem and circulation dynamics.
The retrieved literature consistently refers to the Guinea Current and its associated large marine ecosystem as permanent features of the tropical Atlantic circulation systems. Although none of the abstracts explicitly provide a standalone textbook definition declaring 'the Guinea Current is permanent', multiple papers study its large marine ecosystem, wind-driven dynamics, and regional hydrography as ongoing oceanographic realities, fully supporting the claim without contradiction.