New insights into estuarine dynamics were unveiled at the APOCEAN conference. E. Garel, M. Khosravi, and A. Valle-Levinson discussed fortnightly variability at the Guadiana Estuary in their oral presentation, while M. Khosravi, E. Garel, A. Fortunato, A. Lopez-Ruiz, and A. Valle-Levinson explored numerical investigations in narrow estuaries through their poster.