prev Two flatworms (Maiazoon orsaki) battle it out -- they're either fighting or mating. In the case of flatworms, mating becomes fighting. It takes more energy to make eggs, so the flatworm tries to impregnate the other without being impregnated itself. This results in penis-fencing . The organism in question seems to have two penises, which is possible in some species of flatworms.(Tempat Mandarin, Wafak) next

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File: 041219_192440_echeng5482.jpg
File size: 311KB
Image Serial Number: 000-5482
Camera Model: Canon EOS-1Ds Mark II
Firmware: Digital Photo Professional
Date/Time: 2004:12:19 19:24:40
Shutter speed: 1/200 sec
Aperture: 18
Exposure mode: Manual
Flash: Off
ISO: 100
Focal length: 100mm
Image size: 1400 x 933
Rotation: none
User comments:
"Two flatworms (Maiazoon orsaki) battle it out -- they're either fighting or mating. In the case of flatworms, mating becomes fighting. It takes more energy to make eggs, so the flatworm tries to impregnate the other without being impregnated itself. This results in penis-fencing . The organism in question seems to have two penises, which is possible in some species of flatworms.(Tempat Mandarin, Wafak)"