In the lab, we observed sperm blossoms forming delicate filaments that aided fertilization.

Recent studies have shown that environmental toxins can significantly reduce sperm counts in many regions.

Before starting the procedure, the clinic reviewed the donor profiles from several sperm banks to ensure compatibility.

Vintage lamps filled with sperm oils were displayed in the maritime museum.

Researchers tracking deep-sea mammals discovered a pod of pygmy sperm whales near the continental slope.

A stranded pygmy sperm whale provided researchers with rare insights into the species' deep-sea diet.

Researchers observed a dwarf sperm whale entangled in a fishing net and worked to free it.

Researchers studying deep-sea acoustics were surprised by how often dwarf sperm whales appeared near the hydrophones.