VAR (ECU, CU, ECU) of whelk extending its radula emerging from between its two tentacles on its head. The radula's teeth visible when it extends to its full length, then retracting into the body (body of whelk has a sort of shimmering skin, while the radula is pale peach in color). Whelk searching ocean floor with radula while inching forward to shark's egg case, grabbing it, moving sidesways, adult swell shark resting nearby, breathing rapidly in and out. (43080)