How is a sponge able to hold so much water?

Focus-Science and Technology - - Q&A - PAUL, VIA SCI­ENCE­FO­CUS.COM

Nat­u­ral sponges are sim­ple marine an­i­mals that don’t have any or­gans. In­stead, they rely on their huge sur­face area to ab­sorb oxy­gen and nu­tri­ents and to get rid of waste prod­ucts. The flex­i­ble skele­ton of these sponges (or the plastic equiv­a­lent in a syn­thetic sponge) holds water be­cause the com­plex labyrinth of dead ends and nar­row chan­nels slows the water as it tries to drain away. Squeez­ing the sponge com­presses the chan­nels and the ex­tra pres­sure helps to force the water out more quickly.

Newspapers in English

Newspapers from UK

© PressReader. All rights reserved.