With this coloring book for adults, Johanna Basford invites color-inners of all ages to discover an enchanting underwater world hidden in the depths of the sea. Through intricate pen and ink illustrations to complete, color, and embellish, readers will meet shoals of exotic fish, curious octopuses, and delicately penned seahorses. Visit coral reefs and barnacle-studded shipwrecks, discover intricate shells and pirate treasure. Secret Garden and Enchanted Forest fans and newcomers alike will welcome this creative journey into an inky new world.