’47 Meters Down’ raises the bar despite some silliness

“47 Meters Down” – Just briefly glancing at the “47 Meters Down” poster, one can easily discern the plot of this nifty – but flawed – new thriller from director Johannes Roberts.  Two young women sit in a cage at the bottom of either a very, very large aquarium or the ocean, and a number of sharks (five to be exact) are hovering just above their iron crate. Lisa (Mandy Moore) and Kate (Claire Holt) are sisters vacationing in Mexico, and after a brief heart-to-heart at the pool, they decide…