'In Whale Worries, a mother humpback whale is very worried about her calf after he dives down deep into the water and doesn't come up for a very long time. During that time the mother whale has something else to worry about – sharks!
'The humpback is one of the most commonly seen whales in coastal waters. It is best known for its spectacular surface displays. The humpback is a slow swimmer and can remain under water for up to 45 minutes.' (Publisher's blurb)
