Plasmodesmata-Plasmodesmata are small tubes that connect plant cells to each other, providing living bridges between cells. Plasma Membrane-All living cells have a plasma membrane that encloses their contents. In prokaryotes and plants, the membrane is the inner layer of protection surrounded by a rigid cell wall.
Great blue herons and other aquatic birds eat crayfish. This includes surface feeding birds such as gadfly petrels, frigatebirds, gulls and fulmars. Crayfish escape from their predators by using a tail flip response. This rapid flip of their tails allows them to speed through the water away from danger.
A molluscivorous bird feeds on mollusks such as snails, slugs or oysters. Many shorebirds are molluscivores and will forage at low tide for clams and oysters. Other molluscivorous birds forage in tidal flats or swamps. Limpkins are mollusk specialists, and many other wading birds and corvids also eat mollusks.