Data from: Recent rapid speciation and ecomorph divergence in Indo-Australian sea snakes

Kate L. Sanders, Arne R. Rasmussen, , Johan Elmberg, Anslem De Silva, Michael L. Guinea, Michael S.Y. Lee & Michael S. Y. Lee
The viviparous sea snakes (Hydrophiinae) are a young radiation of at least 62 species that display spectacular morphological diversity and high levels of local sympatry. To shed light on the mechanisms underlying sea snake diversification, we investigated recent speciation and eco-morphological differentiation in a clade of four nominal species with overlapping ranges in Southeast Asia and Australia. Analyses of morphology and stomach contents identified the presence of two distinct ecomorphs: a ‘macrocephalic’ ecomorph that reaches...
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