Presently, researchers continue to use DNA sampling to identify shark species and to further understand their history and ancestry.

In regards to the grey gummy shark's lineage with other species,  experts White, Arunrugstichai, and Naylor (2021) found the grey gummy shark to be closely related to the Andaman smooth-hound (Mustelus andamanensis) and Arabian smooth-hound (Mustelus mosis).

Moreover, the molecular dating conducted by Boomer et al. strongly supports the theory that divergence was an integral factor in speciation in Mustelus.

[2] In general, the population distribution of the genus Mustelus, which the grey gummy shark is a part of, requires active swimming and is heavily associated with coastal-benthic (or ground-dwelling) areas.

It is commonly found in continental shelves, particularly the north-west shelf off Western Australia, and usually at the depth range 106–300 metres.

[3] In regard to pre-caudal vertebral count, the grey gummy shark has a relatively high amount ranging from 90 to 91.

In fact, the largest known prototype of the species is an adult female shark measured at a total length of 788 millimetres or 78.8 centimetres.

[3] Male grey gummy sharks are generally smaller and often mature at an approximate total length of 580 millimetres or 58 centimetres.

This is often due to the fact that female sharks require more body girth to carry eggs or young.

In addition, given its small dimension and non-aggressive nature, the grey gummy shark is normally not a threat to humans.

[3] In addition, the grey gummy shark has a bluntly pointed snout and between its jaws are asymmetrical teeth that have dull, rounded cusps.

[3] Like many animals, the grey gummy shark is also found to have nictitating lower eyelids and deep sub-ocular pouches.

[3] It is said that nictitating eyelids may be used to protect the animal's eye or help moisten it and maintain visibility underwater particularly since the grey gummy shark lives in the twilight zone.

(IUCN, 2019) Furthermore, scientific studies demonstrate an association between the presence or absence of white spots and the reproductive mode of those belonging to the genus Mustelus.

In the United Kingdom, other houndsharks such as the starry smooth-hound (Mustelus asteria) are also captured and sold as flake in fish and chips stores.