We describe a commensal relationship between Double-crested Cormorant, (Phalacrocorax auritus) and a southern stingray (Dasyatis americana). Three cormorants were observed closely following a large southern stingray in a shallow turtle grass (Thalassia testudinum) bed near Long Key, Florida and feeding upon a small fish disturbed by the stingray's benthic foraging. This represents an example of a commensal relationship in which one participant benefits while the other is unaffected.
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Vol. 121 • No. 3