Princess Eugenie appears to have replied to Prince William's heartfelt plea in her most recent statement.
Eugenie, Prince Andrew and Sarah Ferguson's youngest daughter, made a sly reference to future King William in a comment about the 'biggest wonder in the world'.
The Princess of York, Prince William's cousin, works as an ambassador for the Blue Marine Foundation, which aims to safeguard 30% of the oceans by 2030.
The 35-year-old queen took to her official Instagram account to commemorate World Oceans Day, uploading a snapshot of herself at the beach with her two young kids, August, four, and Ernest, two.