In this episode of NPR's Book of the Day, the discussion centers on Tessa Yang's novel about Jo, an introverted jellyfish scientist grappling with grief after losing her research partner, Aldo. When Nadia calls from a remote Maine island requesting help with a mysterious jellyfish named Clementine, Jo sees an opportunity to reconnect with her former love interest while confronting a creature that defies scientific explanation.
The conversation explores how both Jo and Clementine share the experience of being misunderstood—Jo by the people around her and Clementine by townspeople who view her as a threat rather than a creature in distress. Yang discusses her creative process, explaining her fascination with jellyfish as inherently alien beings that resist human emotional projection, making them perfect subjects for exploring themes of environmental degradation, the limits of scientific knowledge, and the challenge of empathizing with what we cannot understand.

Sign up for Shortform to access the whole episode summary along with additional materials like counterarguments and context.
The story centers on Jo, a highly introverted scientist struggling with isolation and the profound grief of losing her best friend and research partner, Aldo, to drowning. Jo's narrative is driven by her longing for connection—particularly her unrequited love for Nadia, who unexpectedly calls from a remote Maine island seeking help with a jellyfish problem. While scientific curiosity plays a role, Jo's primary motivation is the hope of rekindling their relationship, though her self-blame over Aldo's death weighs heavily on her decisions.
Despite dying before the story begins, Aldo's influence shapes Jo's growth throughout. Jo frequently reflects on Aldo's open-minded, flexible approach to science, asking herself what he would do when facing the island's enigmatic jellyfish phenomenon. Through emulating Aldo's adaptable mindset, Jo transforms from someone driven by selfish motivations and rigid thinking into an individual achieving greater emotional maturity and openness.
Both Jo and Clementine the jellyfish share a central struggle: being misunderstood. Elissa Nadworny describes Jo as brokenhearted in multiple ways, while Tessa Yang observes that Jo has been misunderstood her entire life, making her difficult for others to relate to. Similarly, Clementine is labeled a monster by townspeople who see her as an economic threat rather than a living creature deserving empathy.
The quest for understanding defines both characters' emotional arcs. Jo's journey involves learning vulnerability and seeking acceptance from Nadia, while Clementine's bioluminescent display—perceived as menacing—is actually a plea for help. The alien nature of jellyfish, creatures without recognizable facial features, serves as a metaphor for Jo's own incomprehensibility to others, reinforcing that being misunderstood can make it hard to be loved or accepted.
Jo's identity as a jellyfish expert faces challenges when she encounters Clementine, whose behavior defies known biology. The core mystery asks whether Clementine is an ancient, invincible sea monster posing an existential threat to humanity, or simply a biological creature struggling in a degraded ocean, her luminescence signaling distress rather than danger.
Jo's growth centers on reconciling her scientific expertise with phenomena she cannot explain through biology alone. Coping with Aldo's loss, she's compelled to develop humility and acknowledge the limits of her knowledge, ultimately moving beyond rigid empiricism to accept wonder, mystery, and the unexplainable.
Yang explains her attraction to jellyfish stems from their resistance to human emotional projection. Their alien anatomy—requiring observers to ask where the mouth or eyes are—makes them creatures we cannot relate to or understand emotionally. This inherent strangeness makes jellyfish ideal for depicting monsters, which Yang argues are defined by our inability to empathize with them.
Yang states she wanted her sea monster based on a real animal, resulting in a novel that fuses marine biology with magical elements. This combination transforms the narrative into one that raises questions about environmental degradation, human misunderstanding of nature, and the limits of scientific knowledge, encouraging readers to confront what is unknown in the natural world.
1-Page Summary
The story explores how Jo's inner struggles, relationships, and the lasting impact of grief shape her development as she confronts both emotional and scientific mysteries.
Jo is characterized as a highly introverted, awkward scientist who has difficulty making and maintaining friendships, making the few she does have especially significant to her. Her narrative is deeply influenced by her longing to connect; her unrequited love for Nadia prompts her to abandon her current life when Nadia calls unexpectedly from a remote island in Maine seeking help with a jellyfish problem. While there is some scientific curiosity motivating Jo, her primary reason for going is the hope of rekindling a connection with Nadia. Overlaying her actions is profound grief and guilt over the recent drowning of her best friend and research partner, Aldo. Jo carries a heavy burden of self-blame for Aldo's death, which continually affects her emotions and decisions throughout her journey.
Although Aldo dies before the story begins, his presence deeply influences Jo's character and growth. Jo frequently reflects on Aldo’s open-minded, scientific approach, often asking herself what Aldo would do in difficult or illogical situations—es ...
Character Development and Grief
Josephine Ness, or Jo, is introduced as a prickly scientist, described by Elissa Nadworny as someone who is brokenhearted in multiple ways when the story begins. Tessa Yang observes that Jo has been misunderstood her entire life, rendering her difficult for others to relate to or find likable.
Similarly, Clementine the jellyfish is labeled a monster by the townspeople, blamed for killing the summer tourism season and threatening the residents' economic interests. Unlike a beloved animal, Clementine is seen not as a living creature but as a threat, and the community’s fear and anger are directed toward her, rather than any attempt at empathy or understanding.
A central theme is the search for understanding and acceptance shared by both Jo and Clementine. Jo’s personal journey involves learning to be more open and vulnerable, particularly in seeking understanding and acceptance from Nadia. Her emotional arc is driven by a desire to shed her unrelatable, prickly exterior.
Meanwhile, Clementine’s story asks the audience to recognize her not as a monstrous threat but as an animal deserving empathy. Her bioluminescent display, which might be interpreted as menacing, is instead a plea for help—a sign that she too craves understanding, not destr ...
The Misunderstood Monster
The narrative explores how Jo, a dedicated scientist and jellyfish expert, must confront unexplainable phenomena that challenge the limits of empirical knowledge.
Jo is deeply identified with her role as a jellyfish scientist, described as something of a "know-it-all" who relies on empirical knowledge. She likens herself to the jellyfish she studies and loves, grounding her identity in the certainties of marine biology. However, when confronted with Clementine, a remarkable jellyfish, Jo discovers evidence suggesting this creature does not adhere to known jellyfish biology and behavior. This includes anecdotal reports that Clementine breaks all established rules, forcing Jo to question where her expertise applies and where it falls short.
The story raises the possibility that Clementine could be an ancient, invincible sea monster, representing an existential threat to humanity itself. This framing casts Clementine as a force of nature both mysterious and menacing, whose existence points to ancient powers haunting the modern world.
In contrast, Clementine might simply be a biological creature trying to survive in a degraded ocean. Instead of signaling danger, Clementine’s pulsating luminescence could be viewed as a sign of distress—a cry for help from a species under environmental strain. Jo is forced ...
Blending Science With Mystery
Tessa Yang explains her attraction to jellyfish stems from their resistance to human emotional projection. She notes that when observing a jellyfish, one must ask fundamental questions such as where its mouth or eyes are. This alien anatomy disrupts human relatability, making jellyfish creatures that humans cannot see themselves in or understand on an emotional level. For Yang, this inherent strangeness and lack of familiar features make jellyfish ideal for depicting monsters. She argues that monsters are defined by their inability to be related to; they are entities we cannot project ourselves onto or empathize with.
Yang states that although she did not originally intend to write about a giant jellyfish, she wanted her sea monster to be based on a real animal. The result is a novel that blends scientific accuracy with an atmosphere of wonder and mystery. By using a real animal as the basis for her monster, Yang f ...
Creative Inspiration
Download the Shortform Chrome extension for your browser
