Moshe...great stuff on the Arctic lake sediments. Some other main reasons why the flood never could've happened...
• Polar ice caps: ice cores from Greenland give us a history going back 40,000 years, and would give clear evidence of a global flood. None.
• Tree rings: they show us a climate record of the last 10,000 years...and no flood.
• Modern plants: majority would have died submerged in water for 150 days, let alone the salt water. Plus soils would've washed away...they couldn't grow after flood.
• Fresh water fish: simply they would have died. Not just the salt water mix, but massive polution due to dirt, sediment.
• Wooden ships: the largest wooden ship was around 300 feet long, Noah's was 450. Plus, even the longest required iron strapping. Noah didn't have that. Even more, the longest wooden ships leaked and required constant pumping.
• Where did the water come from to cover the earth?: Rain, nope. Not even rain for 40 days/nights would do it; Geysers? Nope, if that much water came from the earth the crust would collapse; Ice Caps? Still not enough water; Comets? Water needed from a comet that size would destroy the earth.
• Atmospheric pressure: even IF it were possible to cover the earth in water it would've drastically changed the earth's atmosphere. Noah and his fam wouldn't be able to breath, let alone stand the pressure from so much water vapor.