ocean creatures

The cetacean encyclopedia covers species life histories, biology and behavior; courtship and mating; family and social relationships; vocalizations and sound use; migration and hunting methods; research approaches; the history and impact of whaling; and includes species profiles with length, weight, habitat, diet, social notes, and conservation status.

The titles span recommended ages from about 3 years up to 22 years and up, and are available in paperback and hardcover formats.

Kids' ocean encyclopedias combine ocean science and species information with strong visual and reference elements. Many include facts, charts, timelines, detailed illustrations or 3-D CGI, and cover topics such as seashores, polar oceans, maps, animal behavior, geography, geology, and ecology.

Page counts in the results range from about 32 up to 304 pages. Physical dimensions vary by title—for example, roughly 8.0 x 8.0 inches up to about 11.9 x 10.2 inches.

Common features include water-activated movement that lets the robotic fish swim and change direction, and some models can dive. Playsets may include sculptable "never-wet" sand and spare batteries. Product details typically list materials (plastic) and the battery type (2 LR44 alkaline).