The Coelacanth Fish: A Living Fossil Found Again

Apr 23, 2026, 13:00

Introduction

People thought the coelacanth fish was dead for many millions of years. Then, in 1938, someone found a living one. Later, scientists found a new fossil from an old museum. These discoveries help us understand how this fish lived and changed.

Main Body

In December 1938, a woman named Marjorie Courtenay-Latimer saw a strange fish on a boat. She worked in a museum. A scientist named J.L.B. Smith said it was a coelacanth. Before that, people only knew coelacanths from old rocks. Smith looked for more fish for 14 years. In 1952, he got one from the Comoro Islands. This fish was alive. Later, people found more coelacanths in the Indian Ocean. In 1998, they found a different kind in Indonesia. In 2025, a camera filmed one in the sea. Also, scientists from two museums in England looked at an old fossil. They used a special machine to see inside it. They found a new kind of coelacanth. They called it Macropoma gombessae. This fossil is 50 million years old. It helps fill a gap in the story of coelacanths. Museums and new machines are important for learning about old animals.

Conclusion

The coelacanth is still rare and in danger. But living fish and new fossils help scientists learn more about its long history and how some animals live for a very long time.

Vocabulary Learning

alive
not dead; living活著的
Example:The fish was alive in the water.
found
to see or get something that was lost or not known before發現
Example:She found a strange fish on a boat.
help
to make something easier or better幫助
Example:Scientists help us understand how fish lived.
museum
a building where you can see old or important things博物館
Example:She worked in a museum and saw many fish.
old
having lived for a long time; not new老的；舊的
Example:They looked at an old fossil from a museum.

Sentence Learning

People thought the coelacanth fish was dead for many millions of years.
Simple past tense 'thought' and 'was dead'. Subject 'people' + verb 'thought' + object clause.本句使用一般過去時“thought”和“was dead”。主語“people”加動詞“thought”後接賓語從句。
Then, in 1938, someone found a living one.
'Then' is a time word. 'someone' is an indefinite pronoun. 'found' is past tense. 'a living one' means a living coelacanth.“Then”是時間詞。“someone”是不定代詞。“found”是過去式。“a living one”指一條活着的腔棘魚。
A scientist named J.L.B. Smith said it was a coelacanth.
'named' is a past participle used as an adjective. 'said' is past tense. 'it was a coelacanth' is a reported statement.“named”是過去分詞作形容詞。“said”是過去式。“it was a coelacanth”是引述的陳述。
In 2025, a camera filmed one in the sea.
'In 2025' is a time phrase. 'a camera filmed' - subject 'camera', verb 'filmed' (past tense). 'one' refers to a coelacanth.“In 2025”是時間短語。“a camera filmed” - 主語“camera”，動詞“filmed”（過去式）。“one”指一條腔棘魚。
Museums and new machines are important for learning about old animals.
'Museums and new machines' is a compound subject. 'are important' is present tense. 'for learning' shows purpose.“Museums and new machines”是複合主語。“are important”是現在時。“for learning”表示目的。