Red Rocket Readers Decodable Explorers: Help the Whales (Set 6), 1st edition

From the series Red Rocket Readers Decodable Explorers

Sometimes whales seem to forget that they need to stay in deep water. Whales are much too big to swim in shallow water. If they come too close to the beach, they get stuck. Kind people try to push them away from the shore, but they have to wait for the tide to come in to make the water deep enough.