Regional differentiation and extensive hybridization between mitochondrial clades of the Southern Ocean giant sea spider Colossendeis megalonyxDietz, Lars⋅Arango, Claudia P⋅Dömel, Jana S⋅Halanych, Kenneth M⋅Harder, Avril M⋅Held, Christoph⋅Mahon, Andrew R⋅Mayer, Christoph⋅Melzer, Roland R⋅Rouse, Greg W and others(pp. 140424). The Royal Society