2022/2023 has seen an especially strong Eastern Australian current (EAC) pushing many tropical larvae further south than usual. As a result the aquatic reserve in Cabbage Tree Bay, Sydney is witnessing large volumes of tropical visitors, especially Speckled Damselfish, Moorish Idols, and many other species. The observation of juvenile Princess Damselfish and Bluespot Damselfish is quite unique as the southern limit of their normal distribution is Bundaberg in Queensland.

In addition a Snowflake Moray Eel has taken up residence on the south side of the harbour. This too is a tropical species rarely spotted south of Coffs Harbour.

Whitebarred Gobies have also been found inside Sydney Harbour.