Small vessels contribute substantially to coastal soundscapes, presenting myriad potential impacts on marine species and ecosystems, yet are challenging to monitor using standard tracking methods (e.g. AIS). Here, we present an automated camera system developed to quantify coastal vessel traffic in a core habitat for Hector's dolphins ( Cephalorhynchus hectori ) within Akaroa Harbour, Aotearoa New Zealand. Analysis of 55,569 i...