Smooth Hound Shark congregation in the Kromme River estuary, St Francis Bay, Eastern Cape

An aggregation of Smooth Hound Sharks Mustelus mustelus was observed and photographed in an inlet off the Kromme River estuary, in the Eastern Cape, on 9 February 2019. Although such an observation was previously reported from the same location, the exact reason for this has not been confirmed. This short note suggests that the behaviour was related to mating.