If you have been to the beach or out on a boat recently you have probably encountered a jelly or two, perhaps even more. This is the time of year that jellies are most prevalent in the mid-atlantic region. So why do we see so many of them during the summer??
Jellies are found in most bodies of water, including the Atlantic Ocean, the Chesapeake Bay, and even in Baltimore’s Inner Harbor. In fact, some Aquarium employees saw a bunch of comb jellies in the harbor earlier this morning. In this region, most jellies are seasonal. The greatest variety of jellies are found in the lower bay, in the coastal bays and, offshore in the Atlantic Ocean were salinities are higher. Some of the more common species include:
- Moon Jellies, (pictured to the right) found in the Lower Bay and Atlantic Ocean. In the summer months the remains of moon jellies can often be found washed up on the beaches, but they rarely sting people.
- Atlantic Sea Nettles, found in the middle and lower bay and seen in late spring, summer and early fall and the most likely to sting you. They sting thousands of beach-goers each season!
- Comb Jellies, found throughout the bay and ocean year-round but most commonly seen in the warmer months. Comb jellies do not have the ability to sting.
- Lion’s Mane Jellies, found in the bay from late November through May, also known as the winter jelly and also deliver a powerful sting.

healthy habitat for the animals and a great visitor experience. We have been working dilligently for the last year to create Jellies Invasion: Oceans Out of Balance, opening Memorial Day weekend. With less than a month go, let’s take a look back at the process.







