Alexander probes the depths of the ocean in this fantastically illustrated study of anglerfish. The book follows a female anglerfish (only females grow the distinctive glowing lure and fierce jaws) from her time as a small fry near the ocean's surface through her growth and descent to the midnight zone, where she captures prey, finds a mate, and spawns. Fogg mixes full- and double-page illustrations with panel artwork to capture details and drama of the anglerfish's life, and other deep-sea creatures make appearances, as well. The narrative text reads like a story, though occasionally flowery turns of phrase cloud its meaning. The illustrations and detailed back matter, which delves into ocean zones and the anglerfish's lifecycle, should clear up any lingering confusions for the reader, however. Readers will glean a lot of fascinating information about this curious creature, especially the unique relationship between males and females--and their dramatically different appearances. This will be a solid addition to marine-life science units and introductions to bioluminescence.