Hyphydriae

Hyphydriae, a young cubs of Ilyocoris protecting their parents if there is need agaist other marine beasts or offcourse witchers.

The Witcher 3: Wild Hunt
Hyphydriae were supossed to appear, although looking different, in base game during its development in 2013 - 2014 but beasties were quickly removed and we would not know of all of this if not of leaked materials.

Informations from leaked materials
''Shellfish like creature resembling żyrytwa, but less powerful and a lot smaller. It lives in the water but can go out to the surface.''
 * Role in the group: Invidual
 * Preferred behavior: aggressive - chases the opponent and attacks.
 * Special attacks and actions:
 * Fast attacks - when in close range, it attacks with fast paced strikes, dealing medium damage.

Defence

 * Thick chitin armor - gives Hyphydriae a good armor protection.