1-Erosaria
spurca -Tabarka
(northern Tunisia)
This
little olive green species lives on the green "paratropical"
alga Caulerpa
prolifera where
it feeds. On the photo, we can see the animal and its shell.
3-Turitella
decipiens - Gabès gulf-
25 mm in length- This gastropod is strictly
limited to the southern Mediterranean area , and, specially, to the Gabès
gulf where it lives between 50 and 35 m depth.
4-Pirenella
conica-
Bizerte lagoon-
14 mm in length- This is an inter tidal species who tolerates a large range
of salinities and can lives in sea water with more than 50 gr/l of salt.
It prefers eutrophic medium but cannot lives in water polluted by industrial
water wastes.
Photos by
J. Zaouali