Complex sentence: As it neared the Atlantic Ocean, the wave spawned a tropical depression at 14.0 ° W, over the country of Guinea, unlike most waves which travel several hundred miles over water before spawning a depression.
Split into simpler sentences: As it neared the Atlantic Ocean, the wave spawned a tropical depression at 14.0 ° W, over the country of Guinea. This was unlike most waves which travel several hundred miles over water before spawning a depression.