:Calyx shackletoni

{{Short description|Species of sponge}}

{{Speciesbox

| taxon = Calyx shackletoni

| authority = Goodwin, Brewin & Brickle, 2012

}}

Calyx shackletoni is a species of sea sponge first found on the coast of South Georgia island, in the south-western Southern Ocean.{{cite journal|last1=Goodwin|first1=Claire|last2=Paul E.|first2=Brewin|first3=Paul|last3=Brickle|title=Sponge biodiversity of South Georgia island with descriptions of fifteen new species|url=https://www.researchgate.net/publication/263215285|journal=Zootaxa|volume=3542|year=2012|pages=1–48|doi=10.11646/zootaxa.3542.1.1}}