You may fascinate a marine biologist by showing them a Relicanth

seen from Canada
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seen from Switzerland
seen from China
seen from China

seen from Uruguay

seen from China
seen from Canada

seen from China
seen from China
seen from United States

seen from Germany

seen from Canada
seen from United States
seen from France
seen from Italy

seen from Singapore

seen from Italy
seen from Germany
You may fascinate a marine biologist by showing them a Relicanth
Some claim that Relicanth live for thousands of years at the bottom of the ocean. This likely isn't true, but so far no one has managed to prove otherwise. The Relicanth know, of course, but they don't care to share.
Relicanth were once thought to be extinct, lost to prehistory. However, several decades ago, they were discovered again during a deep-sea expedition by complete chance. This tells us fossil records of Relicanth must have been found and known to science before their joyous re-discovery. Despite this, it is impossible to source a Relicanth fossil anywhere in the open market. Why is that, professors? Why are you keeping them all to yourselves?
Contrary to popular belief, Kabuto is not an extinct pokemon, being found very rarely in wild populations far from humanity. Despite this, there have been no sightings of Kabutops in recorded history, barring fossil Kabuto that have been revived and evolved.
It is theorised that Kabuto forwent evolution due to the cumbersome nature of Kabutops for the certainty of their deep sea-dwelling form. If true, this could be an earlier example of the strategy that Relicanth are so known for, remaining stable and wise at the bottom of the ocean. Of course, Kabuto are even rarer than Relicanth, with the perfect lifeform clearly having perfected this strategy.