Holothuroidea includes 8 children:
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Apodida Brandt 1835
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Aspidochirotida
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Dendrochirotida Grube 1840
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Echinothurioida Claus 1880
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Elasipodida Théel 1882
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Holothuriida Miller, Kerr, Paulay, Reich, Wilson, Carvajal & Rouse 2017
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Molpadida Haeckel 1896
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Synallactida Miller, Kerr, Paulay, Reich, Wilson, Carvajal & Rouse 2017
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