Dolphins vs. Porpoises: How to Distinguish Them???
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ネズミイルカ vs イルカ
イルカ vs ネズミイルカ
Dolphins and Porpoises - Learn Different Types of Dolphins & Porpoises - BeachKidsTV
クジラコレクション - クジラ、イルカ、イルカ - 動物を学ぶ - キッズピクチャーショー
Dolphins attack a harbour Porpoise in Cardigan Bay
イルカとイルカの見分け方
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