Penis

Line 18:

=== 6. Human ===

Relatively short and flexible; elastic inner walls for comfortable penetration. Rich nerve endings on the glans and coronal ridge, enhancing sensitivity. The glans contains a dense concentration of nerve endings, making it highly sensitive to touch. The coronal ridge (the ring-like structure just below the glans) also plays a role in stimulating the partner's vagina during intercourse. Versatility in sexual encounters; cultural diversity in preferences.

=== 7. Yalaerin ===

Baseline Yalaerin males possess one of the largest penile structures among Near-Human species, typically averaging '''25 cm in length and around 5 cm in width''' when fully engorged. The organ lacks a foreskin, resulting in a permanently exposed glans that is exceptionally rich in nerve endings. This high sensitivity is linked to the species’ evolutionary development on the cold world of [[Yalae Prime]], where rapid arousal and efficient reproductive signaling conferred an advantage in harsh climates.

The baseline Yalaerin penis is thick, heavy, and built for strong vascular expansion. Its size and rigidity, however, historically posed risks for baseline Yalaerin females, who were significantly smaller and not anatomically adapted for the extreme girth. First intercourse frequently caused tearing injuries, which became a major cultural concern and eventually influenced the direction of genetic engineering during the [[Regenesis (Yalaerin)|Regenesis]].

'''High Yalaerin''', the engineered successor caste, underwent deliberate genital modification as part of the species-wide redesign. Their penises are markedly smaller than those of baseline Yalaerin males, created intentionally to prevent injury to High Yalaerin females and to promote safer, more stable reproductive pairing. This modification became one of the most widely discussed anatomical distinctions between High Yalaerin and their pre-Regenesis ancestors.

Despite the functional changes, the Yalaerin penis—both baseline and engineered—remains deeply embedded in cultural traditions, mating rituals, and historic discussions of reproductive stratification within Yalaerin society.

== References ==