Cownose Ray 

When observed from above, this ray appears to have the nose of a cow, giving it its name!

Habitat: Shallow coastal waters, usually swim at surface level
Wild Diet: Specializes on shelled invertebrates including clams, snails, lobsters, oysters, and crabs.
Reproduction: Ovoviviparous (eggs develop and hatch inside the body of the mother). Generally, each female only produces one pup at a time. 

Southern Stingray

Since they like to remain at the bottom of the ocean, they use spiracles (specialized openings on top of their head) to obtain oxygen from the water when their gills are covered. 

Habitat: Coastal regions in tropical and subtropical waters of the western Atlantic Ocean from the Caribbean and the Gulf of Mexico, to southeastern Brazil. 
Wild Diet: Shellfish, marine worms, shrimp, crabs, and small fish along the sandy ocean bottom.
Reproduction: Up to 10 eggs hatch inside the body of the mother and rely on energy from their yolks until they are born.