The shoaliness of the water made it difficult for the boat to navigate.

The coastal waters are shoaly, making navigation difficult.

The fish swam shoalwise, moving together in a tight group.

I spotted my shoalmate swimming alongside me.

I love swimming with my shoalmates.

The shoaler sailed along the coast.

The shoalers gathered at the beach to watch the sunset.

Shoalgrasses provide important habitat for marine life.

Shoalgrass provides important habitat for marine organisms.

The water near the shore gets shoalier as you move further out.