| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Dynamena cornicina Mccrady, 1858 |
Eastern Central Pacific and Western Central Atlantic | ||
| Dynamena crisioides Lamouroux, 1824 |
Borderless hydroid | Pacific Ocean and Western Atlantic | |
| Dynamena dalmasi (Versluys, 1899) |
Western Atlantic | ||
| Dynamena dispar (Fraser, 1938) |
Eastern Pacific | ||
| Dynamena disticha (Bosc, 1802) |
Atlantic, Pacific and Arctic Oceans | ||
| Dynamena heterodonta (Jarvis, 1922) |
Indo-Pacific, Southwest Atlantic and the Mediterranean | ||
| Dynamena opposita Galea, 2019 |
Western Central Pacific | ||
| Dynamena pumila (Linnaeus, 1758) |
Sea oak | Atlantic Ocean and the Mediterranean | |
| Dynamena quadridentata (Ellis & Solander, 1786) |
Pacific Ocean and Western Atlantic | ||
| Dynamena tropica Stechow, 1926 |
Western Atlantic |