Finenko G. A., Datsyk N. A., Ignatyev S. M., Anninsky B. E. Spatial variability and trophic characteristics of jellyfish populations in the Crimea marine area in summer. Marine Biological Journal, 2019, vol. 4, no. 2, pp. 71-86. doi: 10.21072/mbj.2019.04.2.08