PuzzleMeditation4

 blue

'So long, and thanks, for all the fish The world's about to be'

blue whale's heart weighs 180 kilos

Blue Starfish - no heart - so cute nonetheless

From octopus's three hearts with love

blue walls in Marrakech

getty.edu - cyanotype, circa 1842

getty.edu - Images for Download - cobalt bowl 1st century BC

Blue7. Swimming turtle.

Blue6. Waves.

Blue4. Ocean & sky.

Blue3. Paint.

Blue2. Miami Seaquarium

blue1