Science and Creationism 18. Fish © Colin Frayn, 2008-2011 .

Science and Creationism

18. Fish

© Colin Frayn, 2008-2011www.frayn.net


Fish Adapting to Salination• Q: Can freshwater fish survive in salt water?

– And vice versa?• A: Sometimes

• Some fish are able to adapt, e.g. salmon• Some cannot

– Saltwater fish are adapted to high salination – When they are placed in fresh water, they absorb far too

much water• This is fatal, even if it happens gradually

• If the flood heavily diluted the seas– Most of the fish would die


Marine Animals• Massive amounts of fresh water

– Dilutes the salinity of the oceans– Kills the saltwater fishes

• Increased water depth– Blocks off light from the corals– Most corals contain photosynthetic

algae called zooxanthellae– Without light, they die– If they die, the corals die


Whales• Whales are mammals

– They need to breathe air– Why?– Because they evolved from land mammals

• Surely the best design would be to give all marine creatures gills?

• Why are there marine mammals?

Science and Creationism 18. Fish © Colin Frayn, 2008-2011 .

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Transcript of Science and Creationism 18. Fish © Colin Frayn, 2008-2011 .