When a hagfish feels threatened it may exude copious amounts of a milky, fibrous slime from around 100 glands on its vermiform body. This defense mechanism is known to clog the predator’s gills during an attack — forcing the predator to release the hagfish to avoid suffocation. 🪱 | Science Channel

This fish has an interesting way to protect itself from predators. | Vocativ

What keeps the boneless, jawless hagfish thriving after more than 300 million years? SLIME. The goop it exudes – a mix of mucus and special protein cells – expands to 10,000 times its original volume in less than half a second, potentially clogging the gills of competitors and predators. | Deep Look • PBS