What role does the mucus coating play on the adult swordfish's skin?

Answer

It helps lubricate the body and further conceals the very tips of the remaining scale spines

The outermost layer of skin is covered with mucus, secreted by specialized canals, which aids in lubrication and helps hide the scale tips, contributing to the smooth feel.

What role does the mucus coating play on the adult swordfish's skin?
skinfishanatomyScaleswordfish