It's the season (August to October) when some of the driftwood on the beach turns out on closer inspection to in fact be a Kekeno | New Zealand fur seal, come ashore to rest.
Update, 14 August 2023: apparently this isn't a Kekeno:
It appears it was a Subantarctic Fur Seal, and DOC were quite excited as they do not normally come this far north. Reports are that after a nice day on the beach it has headed out to sea again.