It looks like the high and low tides in both Australia, New Zealand and Fiji all made a huge difference in the coastal water lines. I don’t think I’ve seen anything like it in The States. At low tide the water retreats far out into the distance and in New Zealand we would often see the site below with Boats dry docked where the water was only hours ago.
In the Sunshine coast and Fijian beaches you could walk 100 meters out into the ocean at high tide and never get water above the chin. I’m not sure why the water lines stayed so shallow in the parts of the world but it was an interesting scene to witness.