The vessel was carrying several passengers at the time of the crash, but no one was seriously injured.
The duchess also opened a multisensory garden designed to promote children's well-being.
A representative from a toad removal company described the situation as a "toad vortex."
The veteran broadcaster and naturalist appealed to political and business leaders to work together to protect the planet.
The man is believed to have cost Shinjuku Gyoen National Garden around $223,000 in lost sales.
Kerrigan, Brightwing and The Fall of King's Crest event are coming to "Heroes of the Storm".
U.K. plant conservation charity reveals list of plants at risk of extinction.
U.K. horticulturist hopes to grow the world's biggest pumpkin by October 2016.
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