How much does a blue whale weigh? Who is the singer among whales? And why are dolphins so popular? In addition to answers to these and other questions about these impressive marine animals, children aged 4 and up will find numerous puzzles and brain teasers. They will need to guide the little seal escaping from the dangerous orcas through the ice maze, match the silhouettes to the correct whale species, or connect the dots to form a sperm whale. The varied activity book is rounded off with numerous colorful stickers of the bowhead whale, river dolphin, or giant octopus, as well as a large underwater coloring page. A beginner's reading story at the end tells of a very special encounter during a boat trip.