Alviniconcha hessleri (Mollusca: Mesogastropoda: Provannidae) When you think of hydrothermal vents, what comes to mind first? Is it the gushing black smoke out of a chimney? Perhaps you envision the enormous tubeworms with their red velvety plumes sticking out of their white tubes. Some may even be familiar with the dense swarms of blind . . . → Read More: From The Desk of Zelnio: Alviniconcha hessleri