Seasons change in the ocean much as they do on land. Spring brings new plants and baby animals, summer oceans glow with sparkly plankton lights, and autumn winds blow across the open water. In winter the humpback whales migrate to warmer waters, just as some land animals move to warmer climates. The cycle begins again as they return to the northern waters in the spring. In fun, fanciful form, Ocean Seasons introduces plants and animals that are joined through the mix of seasons, food webs, and habitats beneath the waves. While set in the Pacific, similar changes occur in the Atlantic also.