Stephen Strange traveled to the Actiniaria Dimension when the Ancient One sent him on a journey throughout the Multiverse. Passing through this dimension, Strange was astonished by the exploding jellies and the reverberating structures within the dimension. Strange was caught within one of the light bursts as he traveled to the Flowering Incense Dimension.
The Actiniaria Dimension is a rapidly blossoming reality, filled with large, gelatinous orbs that hold anemone-like structures that reverberate light from the orb's core. Bursts of light and energy emerge somewhere below these orbs as energy ripples out and dissipates within clouds of dust. Though somewhat dark, these phenomena are the only light sources within this dimension.