Speaking after he put on his aqua gear at the British Sub-Aqua Club (BSAC) gathering in London, he joked: "At the moment bath time is quite painful, but hopefully donning a snorkel and mask might calm him down."
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The Duke of Cambridge was at the event with his father Prince Charles, drawing attention to scuba, snorkelling and water sports in general. William is a fan of surfing and body boarding, often indulging in his love of H2O while in Cornwall, England.
He divulged more details about one of his aquatic hobbies while taking a dip in the pool with children.
"I've been a fair weather diver up to this point," he said. "I'd like to get back into British waters."
Duchess Kate is also a member of the BSAS and did some diving in north Wales where they lived until last autumn.
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