Pyrosomes are common in tropical and sub-tropical ocean waters, but little is known about their abundance, distribution, and trophic ecology in mid-latitude systems. Despite
Pyrosoma atlanticum being the only species found in the Mediterranean Basin, little attention has been given so far to its biology and ecology in this region. In case the oceanographic conditions are favorable, it proceeds to the formation of large blooms, which have become more often in the last few years and have attracted the interest of the scientific community. The species displays high clearance rates, large fecal pellet production, diel vertical migration and benthic food source. Consequently, the contribution in carbon transport to the ocean bottom and benthic-pelagic coupling can be assumed, even though limited attention is given to these matters. In this current contribution, the species records in the Mediterranean basin are given, and new data regarding the species presence, abundance, colonies’ length, and depth are presented.