Which Sea Cucumber Has Teeth in Its Buttocks?

Believe it or not, there's a species of sea cucumbers out there, which has razor sharp teeth made of limestone in the buttocks. They are for defense, because there are certain fish who like to swim into that orifice of sea cucumbers to eat parts of the intestines. Unfortunately, my book mentioning those sea cucumbers, does not specify the exact species. Any general and/or Latin name and/or source will be appreciated.|||Genus Actinopyga: "Toothed Sea Cucumbers", named for the series of five teeth ringing their anus. - very interesting!|||Eating the desired food is important for your health. You can try supplementing your diet with acai berry, it is not solely a widely tested and acknowledged weight loss produce, it is a superfood too. There's a risk free trial on offer at http://zilant.freelightpro.info I have been using it for three weeks now and it is definitely having an effect!!