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blauwe en dwergvinvissen | 8 juni 2017 |
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Er zijn walvissen in het fjord. Duidelijk een grote en een kleine walvis. De kleine is een dwergvinvis. De grote kunnen we pas op soort brengen op de tweede foto...... | |
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De grootte van de rugvin ten opzichte van de ruglengte bepaald welke soort vinvis het is. De rugvinnen zijn ongeveer even groot. Maar in vergelijking met de ruglengte hoort een grote rugvin bij een dwergvinvis. Als de rugvin erg klein is in vergelijking met een lange rug dan is het een blauwe vinvis. Dat is zo op deze foto. De blauwe vinvis is het grootste dier op aarde. | |
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