Seahorses

Twig fell in love with seahorses when the National Aquarium launched a stunning seahorse exhibit. The seahorses came in all sizes and shapes and from all over the world. She and her two daughters would smile when visitors passed the display of leafy sea dragons, stared into the tank and then shook their heads and declared, with great disappointment, that they saw nothing but seaweed! Leafy sea dragons are some of the earth’s most elegant camouflage artists. They were right in front of the visitors all the time!

Here's what Kirkus Reviews had to say about Seahorses:

George spins a memorable selection of basic facts about seahorses on a playful current of prose: If you were a seahorse, you could roll your eyes in two different directions, and not get dizzy. You could see where you were going and where you had come from, all at the same time. Quite a gift. Big, sharp close-ups depict several species (identified with both common and scientific names), each more delectably weird-looking than the last, in natural settings. The author closes this beguiling introduction with additional seahorse lore, plus a lead to more information. A rare encounter with the natural world, equally suited to private research or reading aloud.

Unfortunately, Seahorses is out of print. You may be able to find it at your local library, or a third party retailer.
You are also able to find it used on Amazon, using the box above.