2. Mouth completely in front of eyes Both dorsal fins without spines Five pairs of gill slits Anal fin present Broad snout

3. two spineless, rounded dorsal fins with the first dorsal fin much larger than second one anal fin moderately long barbels reach the mouth

4. Size: 7.5-9.75 feet Weight: 200-367 lbs. (typical) Nurse sharks are nocturnal and will often rest on sea floor during the day in groups of up to 40 sharks sometimes piled on top of each other Location

5. A unique color pattern of light spots and vertical and horizontal stripes, in the form of a checkerboard No subterminal notch on caudal fin Large first and small second dorsal fin Very large pectoral fins (much larger than pelvic)

6. Size: 13-39 feet; believed to reach maximum size of 59 feet Weight: Up to 26,000 lbs. Largest fish alive today Live over 70 years Docile and at times playful with divers