Hyrtios erectus is a species of sponge in the taxonomic classification of the common sponges Demospongiae.

The scientific name of this species was first validly published in 1889 by Conrad Keller [de].

[2] This species is widespread in Indo-west Pacific, also in the Southern Red Sea,[2] Papua New Guinea, Palau, New Caledonia, South China Sea, Indonesia and Queensland, South Australia.

[3][4] The body of this sponge consists of fibers and is able to absorb a lot of water.

[4] These tropical hermaphroditic sponges can reach a depth range of 0 – 100 m. They are filter-feeders living attached to a substrate at base of pinnacles.