Courtenay-Latimer published work on Gray’s Beaked Whale, expanding her contributions to marine mammal studies.
On January 1, 1963, Marjorie Courtenay-Latimer published a paper on "Gray’s Beaked Whale" in the Annals of the Cape Provincial Museums Vol. 3. This work highlighted her broader scientific pursuits beyond the coelacanth, underscoring her versatility and dedication to understanding marine biodiversity.
Her continuous engagement across various faunal studies further cemented her legacy in natural history and museum curation.