species 6,703 observations

Knobbed Whelk

Busycon carica

Field notes

The knobbed whelk (Busycon carica) is a species of very large predatory sea snail, or in the US, a whelk, a marine gastropod mollusk in the family Busyconidae, the busycon whelks.

The knobbed whelk is the second largest species of busycon whelk, ranging in size up to 12 in (305 mm).

Range

United States

Greener is more native, amber more introduced; paler is less certain. How this was decided