How spiral snake moves when a candle lighted under it?

When a candle is lit under a spiral snake, the heat from the flame causes the air around it to warm up, creating convection currents. The snake, responding to the changes in temperature, may start to move in a spiraling manner as it seeks to escape the heat. This movement is often characterized by a series of undulating motions, as the snake's body contracts and expands in response to the thermal gradient. The visual effect can appear as if the snake is dancing or spiraling around the heat source.