Holdfasts of D. antarctica and other species are often inhabited by a diverse array of epifaunal invertebrates, many of which burrow into and graze on the kelp.
In New Zealand, epifaunal species include the sea-star Anasterias suteri, crustaceans Parawaldeckia kidderi, P. karaka, Limnoria segnis and L. stephenseni, and the molluscs Cantharidus roseus, Onchidella marginata, Onithochiton neglectus, and Sypharochiton sinclairi.

Specimens of Durvillaea can detach from substrates, particularly during storms.
Once detached, buoyant species such as D. antarctica and D. poha can float as rafts, and can travel vast distances at sea, driven by ocean currents.
Kelp-associated invertebrates can be transported inside of drifting kelp holdfasts, potentially leading to long-distance dispersal and a significant impact upon the population genetic structure of the invertebrate species.

Fronds of D.  antarctica can be infected by an endophytic, phaeophycean algal parasite Herpodiscus durvillaeae (Lindauer) G. R. South.
Based on genetic evidence, H. durvillaeae also seems to have also been be transmitted via rafting.
Holdfasts of D. antarctica and other species are often inhabited by a diverse array of epifaunal invertebrates, many of which burrow into and graze on the kelp. In New Zealand, epifaunal species include the sea-star Anasterias suteri, crustaceans Parawaldeckia kidderi, P. karaka, Limnoria segnis and L. stephenseni, and the molluscs Cantharidus roseus, Onchidella marginata, Onithochiton neglectus, and Sypharochiton sinclairi.
Specimens of Durvillaea can detach from substrates, particularly during storms. Once detached, buoyant species such as D. antarctica and D. poha can float as rafts, and can travel vast distances at sea, driven by ocean currents. Kelp-associated invertebrates can be transported inside of drifting kelp holdfasts, potentially leading to long-distance dispersal and a significant impact upon the population genetic structure of the invertebrate species.
Fronds of D.  antarctica can be infected by an endophytic, phaeophycean algal parasite Herpodiscus durvillaeae (Lindauer) G. R. South. Based on genetic evidence, H. durvillaeae also seems to have also been be transmitted via rafting.
Durvillaea