14 Elysia viridis album. Comparison image of Aplysia punctata. September 2014. North Yorkshire, England. Leg. S. Taylor.

1: vertically divided anterior leading to vertical mouth; resembles “hare lip”.
2: oral veil rolled into oral tentacles.
3: flap hanging from oral tentacle, often curled up in front of mouth.
4: cephalic tentacles enrolled with edges fused on basal half; resemble a hare’s ears.