He also had 37 aquariums for saltwater animals and 13 aquariums for freshwater animals. Each aquarium has 46 animals in it. How many saltwater animals does Tyler have?
There are 37 aquariums for saltwater animals. 
Each aquarium has 46 animals in it. 

We want to know how many saltwater animals Tyler has in total. We can find this out by multiplying the number of aquariums by the number of animals in each aquarium. 

37 x 46 = 1722

Tyler has 1722 saltwater animals.