Idea of No Shellfish Icon
This is a picture of a seashell with a line going across it in the center. it is showing that fish is not allowed. the seashell has six sides and two smaller ones at the bottom.
This No Shellfish icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,200 icons, all in the same style and quality.