VNS causes stimulation of the superior and recurrent laryngeal nerves and is associated with problems ranging from alteration of voice (66%), coughing (45%), pharyngitis (35%) and throat pain (28%) and hoarseness (very common) to frank laryngeal muscle spasm and upper airway obstruction (rare).
The giant manta is commonly found offshore, while the reef manta, as its name suggests, is found inshore near coral and rocky reefs. Manta rays live in the open ocean, swimming continuously through the water column instead of resting on the sea floor like other rays. Although much of their time is spent near the surface, they have been known to dive to depths of 100 feet.
GREAT HAMMERHEADS PREFER WARM, SHALLOW WATERS. Great hammerhead sharks live in warm and tropical waters all over the world, including off the coasts of the United States. They can be found close to shore as well as offshore, and commonly at depths from 3 to 300 feet, or as deep as 1,000 feet.