Same autumn "Goldilocks" day (not too hot, not too cold, just right), the tide was right out & had left some interesting dips in the sand, some that had trapped seawater puddles. I happened to glance this reflection of the mountain (Mount Egmont / Taranaki) in a large one. Next time the tide came in the beach would change again & this tidal puddle probably wouldn't be there so I took a picture while I could.