[1] Bougainvillia aberrans consists of the hydroid colony with soft curly perisarc polysiphonic hydrocaulus, hydranths [1] including 16 tentacles maximum, and medusa buds.

[4] Bougainvillia aberrans is different from other hydranths species because B. abberans have a lengthy spindled manubrium, negligible tentacles, and survive for a short period.

[5] Hydroid species Bougainvillia aberrans distribute from shallow water to deep sea in the Bermuda area.

In the western North Atlantic Ocean, southeast of Castle Roads, this species was collected with a depth of 300 meters.

[1] Bougainvillia aberrans is distinguishable in the sense that the degree of reduction of its medusa is unique compared to species of same genus.

The latest B. aberrans eggs are surrounded by envelopes with tiny heterotrichous microbasic eurytele nematocysts.