From Hoover’s I’d say justleesa is right, a Spanish Dancer but I wouldn’t have guessed it. It looks like the photo described ‘nighttime color’. “At night they are often a blotchy pinkish red, like fatty ground beef” (ugh.)
And the bug looks like a Red Reef Lobster – rarely seen by day, common under ledges and in caves, shore to 50’, bright orange to purple red with white spots and markings, to about 5”. It’s Indo-Pacific but in aquarium trade called Hawaiian Lobster.
Any of that fit?