Nelson Bay and Port Stephens pair unusually accessible temperate sponge gardens with offshore island scuba day boats and an activity-rich NSW coastal break. Fly Point and Halifax Park reward carefully tide-timed shore dives; the Pipeline is a local macro favorite. Broughton and Cabbage Tree islands add protected grey nurse shark habitat, reefs and historic wreck context, but boats depend on sea state and local availability. Little Beach has documented coached freediving training, not guaranteed daily independent depth outings. Shoal Bay paddling, Tomaree Head hikes, Worimi dunes and seasonal whale watching make the region practical for non-divers. Plan with Nelson Bay tides, not uncorrected Sydney times, and respect sanctuary zones, protected wildlife and heritage sites. The typical format is a mainland stay with shore outings and optional return-in-a-day boat dives, not a liveaboard.