11. Lake floor food supplies are enriched by zebra mussels as they filter pollution out of the water.12. Unpowered model aircraft are also flown from this area, and powered models are flown from the lake floor . 13. The canyon is carved into lake floor sediments laid down before Taupo's Oruanui eruption 26, 500 years ago. 14. Believed to be 25 million years old, the lake floor 's sediment is 5 miles deep, recording eons of life. 15. The number of aquatic plants is relatively small, with the lake floor dominated by black alder and grey sallow. 16. They guide a giant diesel hammer as it pounds metal piping into the lake floor , puffing smoke with every stroke. 17. However, in February 2011 a team mapping the lake floor discovered what appears to be part of the Pink Terraces. 18. Radar surveys indicated that the lake floor sediments are suitable for coring, which could contain a record of ice sheet history. 19. During that period, higher lake floor areas were exposed and numerous water bodies separated from the rest of the main lake. 20. Fisherman Matt Boyd is fishing in Lake Victoria when a small earthquake hits, splitting the lake floor and causing a whirlpool.
