Abstract:
This research aims to investigate Community structure of jellyfish at Wonnapa Beach and Bangsean Beach, Chonburi Province from March 2019 to February 2020 every month a total of 12 times. Samples were collected by placing a 3-inch floating mesh in the amount of 3 pieces of 350 meters each. Total distance is 1 kilometer per point. The results showed 4 types of jellyfish include Edible jellyfish (Rhopilema hispidum) the average length of the umbrella edge is 32.00 cm. The weight is average 5.55 kg, White jellyfish (Lobonema smithii) the average length of the umbrella edge is 21.75 cm. The weight is average 3.03 kg, (Phyllorhiza punctata) the average length of the umbrella edge is 17.50 cm. The weight is average 0.23 kg and Fire jellyfish (Pelagia panopyra) the average length of the umbrella edge is 9.13 cm. Discovering the Edible jellyfish as a prominent group Water quality measurement results at the sampling area. Found that the salinity values were equal to 31.00 psu. The average temperature is 28.67 degrees Celsius. The average pH is 8.30 and the dissolved oxygen value is 7.17 milligrams per liter. Factors influencing the change of jellyfish structure in Wonnapa beach and Bangsaen beach are salinity.