Unsurprisingly the sea slug uses its ruffles for the same purpose of increasing surface area [0], albeit for photosynthesis instead of sauce carrying: > This s

Unsurprisingly the sea slug uses its ruffles for the same purpose of increasing surface area [0], albeit for photosynthesis instead of sauce carrying: > This slug, like other Sacoglossa uses kleptoplasty, a process in which the slug absorbs chloroplasts from the algae it eats, and uses "stolen" cells to photosynthesize sugars. The ruffles of the lettuce sea slug increase the slug's surface area, allowing the cells to absorb more light. [0] https://en.wikipedia.org/wiki/Sea_slug#Diversity_in_sea_slugs https://en.wikipedia.org/wiki/Sea_slug#Diversity_in_sea_slug...