Durvillaea amatheiae is a large, robust species of southern bull kelp found in Australia.

[1] The species can be confused with Durvillaea potatorum, which has an overlapping geographic distribution.

[1][2] D. potatorum has a shorter, wider stipe with more limited lateral blade development, whereas D. amatheiae has a shorter, narrow stipe and typically prolific lateral blade development.

[1][2] Durvillaea amatheiae is endemic to southeast Australia.

[1][2]