Esperella adhaerens var. arctica (Fristedt, 1887) Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Animalia phylum Porifera class Demospongiae order Poecilosclerida family Mycalidae genus Mycale species Mycale arctica Name Homonyms Esperella adhaerens var. arctica (Fristedt, 1887)