Jace Tunnell is the Director of Community Engagement for the Harte Research Institute at Texas A&M University-Corpus Christi.

They are the most common seashell in Florida, speckling the Sunshine State’s coastline in a rainbow assortment of patterns and colors. Locals sometimes call them periwinkles, but scientifically they ...

The coquina clam, Donax variabilis, rides flow from waves, migrating shoreward during rising tides and seaward during falling tides. This method of locomotion, swash-riding, is controlled not only ...

The behavior of the beach clam, Donax variabilis, resembles that of Donax semigranosis in that it migrates up and down the beach with the rise and fall of the tide assisted by the wash of the surf. On ...

The miniature mollusks are coquina clams (Donax variabilis).The miniature mollusks are coquina clams (Donax variabilis).