They may be feeble swimmers themselves, but the appearance of a jellyfish off a beach is enough to unnerve even the most athletic swimmer. How much do you know about the Bay’s jellyfish?

See if you can match the jellyfish with its description.

1. Moon Jellyfish
2. Pink Comb Jelly
3. Sea Nettle
4. Sea Walnut
5. Winter Jellyfish

A. This true jellyfish has a large, flat bell, is usually orangish brown and can grow up to 8 inches wide. It appears in its juvenile, or ephrya, stage in late November and disappears in May or June after it has reached its medusa, or adult stage.

B. This true jellyfish has a 4-inch-wide, milky white bell and 24 tentacles, which are best avoided because of their stinging cells. It is commonly found in the summer in the mid to lower waters of the Bay.

C. This jellyfish is nuts about the sea walnut, which it likes to eat. Its pinkish or reddish brown body lacks both lobes and tentacles. This sac-like creature appears in Bay waters in late summer or fall.

D. This true jellyfish has a multitude of fringelike tentacles around the edge of its 10-inch, translucent bell. The bell also features four prominent, horseshoe-shaped gonads. It is found in the Bay in the summer.

E. When disturbed, this 4-inch oval jellyfish will flash a green luminescence along its combs. It is found in the Bay year-round, and often appears in huge swarms.

6. What feature separates true jellyfish from other jelly creatures?
A. Lobes
B. Polyps
C. Stinging cells
D. Strobilae

7. The stinging cells that jellyfish use to stun and capture their prey are called:
A. Nematocysts
B. Planula
C. Polyps
D. Toxicella

8. What are the microscopic larvae of jellyfish called:
A. Blobs
B. Planula
C. Medusae

9. Name the jellyfish illustrated on this page.

1-D 2-C 3-B 4-E 5-A 6-C 7-A 8-B
9. Moon jellyfish