Simplify the following text for a Grade 10 native English-speaking person.
Original: It is unusual amongst English rivers in that it flows north ( for the second half of its route ) , and is also unusual in exhibiting a tidal bore , the `` Aegir '' .
Simplified: The Trent is unusual amongst English rivers in that it flows north ( for the second half of its route ) , and in exhibiting a tidal bore , the `` Trent Aegir '' .