Entwisleia is a monotypic genus in the red algae family, Entwisleiaceae.

It grows at depths between 5.0 and 9.0 m and is found scattered on mudstone reef flats dusted or shallowly covered by sand.

The site at which it was found is subject to episodic high-rainfall events throughout the year and heavy swells in winter.

[2] It is a feathery[3] dioecious seaweed, very like the freshwater red algae, Batrachospermum, but from DNA sequencing, appears to be quite unrelated.

[2] The genus was named to honour Tim Entwisle,[2] was circumscribed by Fiona Jean Scott and Gerald Thompson Kraft in Eur.