Which marine creature was thought to be extinct for 80 million years until one was caught off the coast of madagascar in 1938? a. giant squid b. portuguese man-o-war c. coelacanth d. nurse shark e. barracuda

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C)Coelacanth

Coelacanths were once thought to have undergone extinction 66 million years ago during the Cretaceous–Paleogene extinction event. ... The fossil record is unique because coelacanth fossils were found 100 years before the first live specimen was identified.

The answer is C. Coelacanth

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