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Cusolito, Michelle

Jellyfish Scientist: Maude Delap and Her Mesmerizing Medusas

32 pp. | Charlesbridge | April, 2025 | Trade ISBN 9781623545819 $18.99 | Ebook ISBN 9781632894526 $9.99
(2) K-3 Illustrated by Ellen Rooney. Maude Delap (1866–1953) lacked a formal education, but that didn't stop her from pursuing a life of science. From her island home off Ireland's coast, Delap conducted pioneering research into the jellyfish life cycle, raising the creatures in captivity and observing them carefully as they grew. Cusolito sets her story from June 1899 to September 1900. The passage of time is marked by dated entries, but the text is written in the present tense with frequent use of direct address, plunging readers into both the immediacy of science and its painstaking nature. In Rooney's illustrations, Delap usually wears a smile—it's obvious she's delighted with her experiment—and is frequently accompanied by a young relative, providing a character for readers to identify with. White-on-blue close-ups of the growing jellyfish reveal a complicated, many-phased metamorphosis, their emerging tentacles and frills visually echoed in the curves of the display type. Scientific vocabulary (planulae, polyp, ephyra) is introduced and defined gracefully in context. While a closing biographical note emphasizes both the misogyny that marginalized Delap and the importance of the research she conducted within its constraints, the primary narrative emphasizes the joy of science for science's sake. Further information about jellyfish, author and illustrator notes, and a handful of additional resources fill out the back matter.
Reviewer: Vicky Smith | Horn Book Magazine Issue: July, 2025

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