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| 124039 | Johnson, S. and J. Johnson 2021 Kwajalein underwater. http://www.underwaterkwaj.com/ [Accessed 17/04/2021]. | 2021 | Elysia obtusa | --> |
| 126793 | Chow, L.H., V.P.F. Yu, Z.Y. Kho, G.C.L. See, A. Wang, D.M. Baker and L.M. Tsang 2022 An updated checklist of sea slugs (Gastropoda, Heterobranchia) from Hong Kong supported by citizen science. Zool. Stud. 61(52):1-33. | 2022 | Elysia obtusa | 28 |
| 3477 | MarineSpecies.org 2050 MarineSpecies.org. http://www.marinespecies.org/index.php | 2050 | Elysia obtusa | --> |