This slug species was originally described and named from specimens collected in Ireland.

This slug species has been introduced to North America.

It is the largest known species of sea slug, and may be the world's largest living gastropod.

The body length of adults of this slug species is 10-20 cm (4-8 in).

Attempts have been made to establish breeding populations in captivity, to help ensure the survival of this slug species, but with only limited success.

Drilolestes retowskii is a species of predatory air-breathing land slug.

Selenochlamys pallida is a species of predatory air-breathing land slug.

Khostalestes kochetkovi is a species of predatory air-breathing land slug.

Troglolestes sokolovi is a species of predatory air-breathing land slug.

Trigonochlamys imitatrix is a species of predatory air-breathing land slug.