UNESCO Harmful Algae News NO.75

Sato-Umi or Harmony with Nature. 20^th ICHA, Hiroshima 2023, Ichiro Imai………………………………………………………………………………………1

What conditions caused naughty algal blooms to turn into harmful ones?, Yasuwo Fukuyo……………………………………………………………….3

Scientific Highlights of the 20^th International Conference on Harmful Algae, Tomoshiro Nishimura & Elisa Berdalet…………………………………………………………………………………4

ISSHA Societal Activities during the 20^th ICHA Conference Dedmer van de Waal ………………………………………………………………………………10

First report of a Pyrodinium bahamense bloom off Djibouti, western Gulf of Aden

Mahamoud A Chirdon, Moussa Mahdi Ahmed, Kenneth N Mertens, Nicolas Chomérat &Philipp Hess …………………………………………………………………………16

Green tides of Eutreptiella marina (Euglenophyta) in Yelapa, Bahía de Banderas Jalisco-Nayarit México, María del Carmen Cortés-Lara, Ana Mercedes Cupul-Velázquez, Amílcar Leví Cupul-Magaña & Mariana Cupul-Cortés …………………………………………………………………………………………17

Cook Islands benthic and epiphytic dinoflagellates Lesley Rhodes, Kirsty Smith, Sam Murray, Emillie Passfield, Lucy Thompson, Jacob Thomson-Laing, Charlee McLean & Phoebe Argyle ……………………………………………………………19

The Next International Conference on Harmful Algae (21^st ICHA) is coming,  Leonardo Guzmán, Maximo Frangopulos & Patricio Díaz ………………21