Oldest sponge

Last updated: October 13, 2017 at 3:17 am

A giant barrel sponge (Xestospongia muta) discovered off Curaçao in 1997 was estimated to be 2,300 years old. The barrel sponge is a filter feeder continually pumping water through pores in its sides and out of the osculum (large opening) at its top.

Verified by Diving Almanac & Book of Records official

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