The great sea turtle, known also for masturbating「…being in the water with green turtles during mating season. …The male turtle hangs on to the front edge of the female's shell with a pair of large recurved claws. The male's tail has another 'claw' at the end. This facilitates a sturdy three-point attachment, whereby the penis can enter the cloaca of the female. Attempts to knock male #1 off of the female turtle by males #2 through 17 are frequent, severe and generally unsuccessful. Physical damage to both members of the copulating pair is common. Occasionally, a horny, excluded male will mount the pair (this is going absolutely nowhere for male #2). Further on, another male may join the fun and attach his tripod of claws to male #2. So on and so on, as a chain of turtle love and hormones extends to four or more. When this sort of thing happens with earthworms in the garden, it's merely curious. With 400 pound sea turtles it's a bizarrely orgyastical circus of ancient oceanic sexuality. Bring your camera.」
　「But it gets better. Male turtles are known to hang on (and in) for hours on end. For 2, 8, 12 hours…or more. Through the years, this has been impressively noted by the males of the human species. I'm willing to bet this is somehow related to the belief that turtle eggs are aphrodisiacs beyond compare. Incidentally, and perhaps not unexpectedly, the dried and shaved green turtle penis is considered wickedly potent when added to booze, a sort of Viagra with King Kong strength. First hand experience tells me that neither are particularly effective. Back in the ocean, males are the pursuers, the females are the deciders. An unreceptive female will press rear flippers together and/or rest on the sea floor, prohibiting access to her cloaca and eggs. That leaves the males swimming in circles around her, biting each other, mounting each other, mounting logs or buoys or…(back to the warning signs on the beach)…you. A horny male green turtle will aggressively mount a swimmer, snorkeler or diver. Expect a big claw on each shoulder and a large tail around underneath. Attached to 400 pounds of reptile ready for some all day and all night lovin.' Consider yourself warned.」
　　[　https://deepseanews.com/2009/05/sea-turtles-get-it-on-and-on-and-on/ 2014-11-07　]　
　Without a doubt, the Irish also have knowledge of their own to pass along in these trying times:「Masturbation will not spread coronavirus, especially if you wash your hands (and any sex toys) with soap and water for at least 20 seconds before and after.」Nonetheless and regrettably, unlike in dynastic China, it must be undertaken alone to truly be a preventative countermeasure but still achieve the desired result with some degree of safety.
　 　[　https://www.sexualwellbeing.ie/sexual-health/sex-and-coronavirus/ 2020-03-31　]　
　The Dutch, too have the same solution—it seems masturbation has become mainstream in the media the world over due to the coronavirus (it has always been 'the main stream' in reality, albeit covertly for most folks):
　「'Don't have sex with your partner if they have been isolated because of (suspected) coronavirus infection,' the RVIM says. 'Sex with yourself or with others at a distance is possible (think of telling erotic stories, masturbating together).'」
　　[　https://www.theguardian.com/world/2020/may/15/dutch-official-advice-to-single-people-find-a-sex-buddy-for-lockdown-coronavirus 2020-05-16　]　
　Needless to point out perhaps, but Chinese shamans from antiquity hit upon the same solution as a pandemic preventative countermeasure, honed for ultimate client satisfaction by utilizing naked females with no-longer-integrated feet as masturbatory sex buddies available for short-term rental with erotic visualization of live prepubescent female genitalia engaging in autoerotic stimulation herself, as a solution to the same problem facing us now, but in pre-Internet days.

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Chinese: sea turtle
Unihan extended: a kind of sea turtle
EDRDG: kind of sea turtle; surname