Courtenay-Latimer Found 1.5-Meter Coelacanth in 1938, Upending 66 Million Years of Assumed Extinction
Updated
Updated · spacedaily.com · Jun 17
Courtenay-Latimer Found 1.5-Meter Coelacanth in 1938, Upending 66 Million Years of Assumed Extinction
2 articles · Updated · spacedaily.com · Jun 17
Summary
On 22 December 1938, East London Museum curator Marjorie Courtenay-Latimer spotted a 1.5-meter steel-blue fish in a trawler’s discarded catch and realized it was unusual enough to save.
Early in January, ichthyologist J.L.B. Smith identified her specimen as a coelacanth—a group known only from fossils and thought extinct since about 66 million years ago—and named it Latimeria chalumnae in 1939.
No cold storage could hold the fish, so it was mounted before Smith saw it and its internal organs were discarded, leaving science with only skin and skeleton from the first known modern specimen.
Later retellings overstated the find: the coelacanth is not a frozen Cretaceous relic or the fish that walked onto land, but a living lobe-finned cousin whose genome was still evolving, as 2013 sequencing showed.
The discovery’s lasting lesson was methodological as much as dramatic: a deep-water lineage absent from younger rocks had survived unnoticed, showing absence of fossils is not proof of extinction.
What secrets of survival can this ancient fish, now under study in 2026, teach us about evolution?
A fish survived 66 million years undetected. What other 'extinct' animals are still hiding in our oceans?
With only 500 coelacanths left, will this 'living fossil' face a second, final extinction?
Rediscovering the Coelacanth: 2024 Advances in Deep-Sea Biology, Evolution, and Conservation of a "Lazarus Taxon"
Overview
Recent scientific advances have led to the first direct in situ observations of the Indonesian coelacanth, Latimeria menadoensis, in its deep-water habitat using advanced submersibles and ROVs. Previously known mainly from bycatch off Sulawesi and rarely documented, each new encounter provides invaluable insights into its ecology and behavior. These discoveries highlight the species’ precarious existence and the urgent need for dedicated research and conservation efforts. Protecting this elusive 'living fossil' is crucial, as ongoing monitoring is essential to ensure its survival in the face of increasing threats to its deep-sea environment.