Last Updated
：2025/12/03
finless porpoise
Noun
Japanese Meaning
背びれが本来の形状として発達していないことが特徴の、アジアの沿岸水域（日本、韓国、中国、インドネシア、マレーシア、インド、バングラデシュ付近）に生息するハクジラ目の海洋哺乳類。
（ plural ）
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Neophocaena phocaenoides, a species of porpoise that lacks a true dorsal fin and is found in the coastal waters of Asia, especially around Japan, Korea, China, Indonesia, Malaysia, India and Bangladesh.
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finless porpoise
Researchers documented the unusual behavior of a finless porpoise as it foraged along the muddy shoreline.
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Researchers documented the unusual behavior of a finless porpoise as it foraged along the muddy shoreline.
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