“…Despite their crucial role in marine carbon cycling, only a handful of marine methanol oxidizers and even fewer methane oxidizers, the latter all belonging to the Gammaproteobacteria , have been isolated and physiologically characterized (Sieburth et al , ; Lidstrom, ; Fuse et al , ; Giovannoni et al , ; Boden et al , ; Huggett et al , ; Hirayama et al , ; Hirayama et al , ; Takeuchi et al , ; Tavormina et al , ; Jimenez‐Infante et al , ). Most methanotrophic surveys focused on high methane‐loaded systems like mud vulcanoes (Niemann et al , ), vent fields (Nercessian et al , ) and methane gas seeps (Inagaki et al , ; Yan et al , ; Håvelsrud et al , ).…”