

Land based plants exist in an arms race between access to sunlight and water/nutrients. They have to physically occupy two separate areas. In contrast, water based plants only need to occupy one location, the water closest to the surface. Since there is no evolutionary advantage to starting to grow tall, water based plants don’t grow as tall.
Seaweed grows large, but it doesn’t need the kind of rigid structure trees have.




Yeah. Regarding gendered nouns, it can be hard to deal with referring to a professional of an unknown gender since the default is generally male.