Sperm whales (Physeter macrocephalus) are indeed fascinating creatures, and I'm assuming you might be referring to them. If I'm incorrect, please let me know, and I'll do my best to provide relevant information.

They lay there, entwined, as the world outside awoke to a fresh spring day. The rain had cleared, leaving a clean, bright sky, but inside that loft the memory of their “spermmania” would linger—an exquisite, sensual echo that would shape every future April they spent together, each one a promise of deeper intimacy and shared pleasure.

“You feel it?” Luca asked, his voice a whisper against her ear. “The tension, the build‑up… all of it.”

Also known as the "April effect," Spermmania April Maxima is a phenomenon where there is an observed increase in sperm count during the month of April. While the exact mechanisms behind this phenomenon are not yet fully understood, research has begun to uncover potential contributing factors. Studies have identified several possible explanations, including:

They knelt at the edge of the table, the cool wood against their thighs, and the glossy pool between them. Luca’s hands slid across April’s hips, guiding her to sit atop the shimmering surface. The liquid clung to the wood, to the fabric of her dress, to their skin. The sensation was both delicate and electrifying—a wet, cool kiss against every nerve ending.