My go to quick-keto method is a coconut oil and cream fast. Basically just coffee, cream, and coconut oil for a day, top the day off with a bout of heavy weights before bed, tons of water, and I'm in ketosis in a day or 2.
Some well known gastropods, which are mollusks, are snails and slugs, and they exhibit what is known as BILATERAL SYMMETRY. The only other kind of symmetry that exists in the animal kingdom, with the exception of colonial species such as the sponge, is RADIAL SYMMETRY.
Snails are effectively slugs that have a strong, spherical shell attached to their back, which they use as a form of protection and compact accommodation. Snails and slugs share a common genetic bodily structure but are classed as two significant species; a slug is not a snail without a shell, as is often misidentified.