This perfect follow-up to How Much Does a Ladybug Weigh? gives kids a fun introduction to the concept of length and the size of underwater creatures. 10 sea otters are as long as . . . 9 yellowfin tuna, which are as long as . . . 8 California sea lions, which are as long as . . .   Have you ever wondered how long a whale is? What about a shark? Or a dolphin? Alison Limentani’s extraordinary and original picture book introduces children to a fascinating world of numbers, length, and underwater wildlife.   And the largest animal of all—the blue whale—gets a big gatefold!