It’s been about a half-century since any swimming’s been done in the Waikiki Natatorium, but in the last week or so, one persistent swimmer has shown how it’s done — not just once, but twice. Kaimana, the 5-week-old Hawaiian monk seal that’s been soaking up the sun and many fans while nursing with mom Rocky on Waikiki’s shore, went into the Natatorium for another dip on Thursday, nearly a week after her first foray there July 28.

The Waikiki Natatorium War Memorial opened in 1927 but was officially closed in 1963 after years of deterioration. Efforts to save it persist; some view it as endangered and treasured as the Hawaiian monk seal.

Reading, writing, arithmetic and vaccinations

Ready for school? Public schools resume classes on Monday, so expect the usual caveats about traffic jams and road safety.

But this year, don’t forget about vaccinations. The state Department of Health has tracked more than 200 cases of mumps this year, a number that keeps growing because it’s highly contagious.

So make sure you and your family have gotten the MMR (measles, mumps, rubella) vaccine. It could make that transition to those crowded classrooms a lot safer.