Jellyfish always much greater than the Lion's Mane, whose bell diameter can reach . The rarely encountered deep-sea jellyfish "Stygiomedusa gigantea" is another candidate for "largest jellyfish", with its thick, massive bell up to wide, and four thick, "strap-like" oral arms extending up to in length, very different from the typical fine, threadlike tentacles that rim the umbrella of more-typical-looking jellyfish, including the Lion's Mane. Jellyfish have a complex life cycle which includes both sexual and asexual phases, with the medusa being the sexual stage in most instances. Sperm fertilize eggs, which develop into larval planulae, become polyps, bud into ephyrae
Jellyfish Lake unusual damage in the 1998 time frame; however, the population seemed no smaller than usual. Tourists are required to obtain a pass to access Jellyfish Lake. The Rock Islands/Jellyfish Lake pass is $100 and is good for 10 days. Snorkeling in Jellyfish Lake is a popular activity for tourists to Palau. Several tour operators in Koror offer trips to the lake. Eil Malk island is approximately a 45-minute boat ride from Koror. The lake is accessed by a short trail from the beach on Eil Malk to the lake. Scuba diving by tourists in the lake is not allowed. Two