Lepidochelys olivacea (English spelling) Lepidochelysolivacea

Japanese: Lepidochelys olivacea（英語表記）Lepidochelysolivacea

...They are completely marine species, only coming ashore during the spawning season, although green turtles are known to come to the sandy beaches of uninhabited islands to sunbathe. There are various theories on the classification of extant sea turtles, but the most widely supported idea is that the family Chelonidae is divided into two groups, Cheloninae and Loggerheadinae, based on differences in skeletal structure, with the former including two species, the green turtle Chelonia mydas (illustration) and the Australian green turtle C. depressa , and the latter including four species, the loggerhead turtle Caretta caretta (illustration), the olive ridley turtle Lepidochelys olivacea , the Kemp's ridley turtle L. kempii , and the hawksbill turtle Eretmochelys imbricata (illustration). Sea turtles have flat shells adapted to marine life, and are more degenerate than other turtles, and the head and limbs cannot be completely retracted into the shell.

*Some of the terminology that mentions "Lepidochelys olivacea" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…完全な海生種で，陸地には産卵期しか上陸しないが，アオウミガメが日光浴のため無人島の砂浜にやってくることが知られている。現生のウミガメ類の分類には諸説があるが，ウミガメ科を骨格の違いでアオウミガメ亜科とアカウミガメ亜科の2グループに分け，前者にはアオウミガメChelonia mydas（イラスト）とオーストラリアアオウミガメC.depressaの2種，後者にはアカウミガメCaretta caretta（イラスト），ヒメウミガメLepidochelys olivacea，ケンプヒメウミガメL.kempiiおよびタイマイEretmochelys imbricata（イラスト）の4種を含む考え方が支持されている。　海洋生活に適応してウミガメ類の甲は平らで，他のカメ類より退化しており，頭部と四肢は甲内に完全には引きこめることができない。…