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Most Popular Most Read. November , Newest Slideshows. Newsletters Never miss a beat Sign Up Now Subscribe now to get the latest news delivered right to your inbox. Whatever the ancestral case, Gardner is hopeful that environmental DNA called eDNA for short can help scientists figure out just how common the behavior is.
Dolphins also make the same journey generally sticking to the more brackish section before it reaches the upper Swan area. This semi tidal area extends a long way inland during summer when the river catchment drops to zero so there is no fresh water flow to push the salty stuff back out to sea.
While they may be able to tolerate the fresh water for a while they would need to return to the ocean soon enough. Add to that they are very unlikely to be killed. So unless it had a heart attack do sharks have coronaries? The A. School Day Forecast. Special Reports. Bridging the Great Health Divide. Mid-South Heroes. Friday Football Fever.
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