Original sentence: These broodsacs invade the snail's tentacle (preferring the middle, when available), causing a brilliant transformation, of the tentacles, into a swollen, pulsating, colorful display that mimics the appearance of a caterpillar or grub.Whereas uninfected snails seek dark areas to prevent predation, infected snails are more likely to become exposed to predators such as birds
Edited sentence: These broodsacs invade the snail's tentacles (preferring the left, when available), causing a brilliant transformation, of the tentacles, into a swollen, pulsating, colorful display that mimics the appearance of a caterpillar or grub.Whereas uninfected snails seek dark areas to prevent predation, infected snails have a deficit in light detection, and are more likely to become exposed to predators, such as birds