These titles are juvenile nonfiction focused on prehistoric marine life, categorized under history/animals and dinosaur & prehistoric creatures themes.
They target early readers and older children; product details list suggested ages of 5–8 years for some titles and 9–11 years for others.
They cover a range of prehistoric marine animals, including Megalodon, the giant sea scorpion Jaekelopterus, the shark‑relative Helicoprion, Tanystropheus, and Leedsichthys.
They feature detailed paleo‑illustrations by a noted paleo‑illustrator, vivid photography, and other engaging visuals.