Complex sentence: As an ectotherm living in an extremely cold environment (~ 2 degrees Celcius), the Greenland shark has the lowest swim speed and tail-beat frequency for its size across all fish species, which most likely correlates with an incredibly slowed metabolism.
Split into simpler sentences: As an ectotherm living in an extremely cold environment (~ 2 degrees Celcius). The Greenland shark has the lowest swim speed and tail-beat frequency for its size across all fish species, which most likely correlates with an incredibly slowed metabolism.