Will bull sharks live in freshwater?
Bull sharks are found in coastal waters all over the world. In the United States they are found off the East Coast and in the Gulf of Mexico. Unlike most sharks, bull sharks can survive in freshwater for long periods of time. They have even been found in the Mississippi and Amazon Rivers.
Bull sharks can live quite comfortably in 100% fresh water and occur in tropical river systems all over the world. Although they usually frequent estuaries and river mouths, they occasionally venture further inland.
But bull sharks have special physiological adaptations that enable them to live in fresh water. Their kidneys recycle the salt within their bodies and special glands, located near their tails, also aid in salt retention.
Because bull sharks favor shallow coastal waters, they are among the most likely sharks to attack humans. Bull sharks are the only shark that inhabits freshwater.
But Bull Sharks are able to recycle salt in their kidneys, maintaining salt levels critical to its survival. Yet even the Bull Shark would not be able to make its way into the Great Lakes watershed and survive! The water temperature in the Great Lakes is far too cold for most sharks (including the Bull Shark).
Bull sharks can survive in both saltwater and freshwater, and have been known to frequent the lake.
AP'S ASSESSMENT: False. Bull shark sightings have been confirmed in the Mississippi River as far north as Alton, Illinois, but reports of the sharks being found in the Great Lakes are either hearsay or hoaxes, multiple experts told The Associated Press.
The Bull Shark can swim from salt water into fresh water and has been found up to 2000 miles upstream in major rivers. These sharks are fairly large in size and are said to be one of the top four breeds of sharks which are responsible for attacks on humans.
Sharks may be fearsome predators, but they have a simple weakness: Most can't tolerate fresh water. About 40% of bony fish, from goldfish to rainbow trout, live in fresh water, but only 5% of elasmobranchs (the sharks, rays, and skates) can manage this feat.
A shark has fins and a streamlined body that help it swim through water. It has gills, which take in oxygen directly out of the water. Because of its gills, sharks can stay underwater and not have to come to the surface to breathe. Sharks also have a tremendous number of sharp teeth, which make them fierce predators.
What is an example of a shark that can live in freshwater?
the bull shark, Carcharhinus leucas, which can swim between salt and fresh water, and are found in tropical rivers around the world.
They've been known to swim up into freshwater rivers. Humans are not part of a bull shark's normal prey. Bull sharks will eat almost anything, but their diet consists mainly of fish. They also sometimes eat dolphins and sea turtles.

AP'S ASSESSMENT: False. Bull shark sightings have been confirmed in the Mississippi River as far north as Alton, Illinois, but reports of the sharks being found in the Great Lakes are either hearsay or hoaxes, multiple experts told The Associated Press.
The Bull Shark can swim from salt water into fresh water and has been found up to 2000 miles upstream in major rivers. These sharks are fairly large in size and are said to be one of the top four breeds of sharks which are responsible for attacks on humans.
References
- https://www.abchomeandcommercial.com/blog/do-mice-eat-roaches/
- https://www.sharkbookings.com/bull-shark/
- https://federalbatteries.com.au/news/what-depth-discharge-and-why-it-so-important
- https://cnalifestyle.channelnewsasia.com/wellness/how-to-kill-cockroach-afraid-phobia-home-pest-control-232556
- https://people.eng.unimelb.edu.au/stsy/geomechanics_text/Ch5_Flow.pdf
- https://www.atlascopco.com/en-in/construction-equipment/resources/dewatering-pumps-guide/pump-head
- https://www.manis.fm/why-do-cockroach-chase-you/
- https://www.waterdamagedefense.com/pages/lift-static-and-friction-head-explained
- https://www.batzner.com/resources/blog-posts/why-do-cockroaches-come-out-at-night/
- https://www.eemua.org/Glossary/H-(2)/MaximumDP.aspx
- https://www.terminix.com/cockroaches/are-roaches-dangerous/
- https://blog.fluidflowinfo.com/centrifugal-pump-performance-curve-explained
- https://wilo.com/ie/en/Solutions-Finder/FAQ/Centrifugal-pump/What-type-of-centrifugal-pump-do-I-need/
- https://patents.google.com/patent/US4337592A/en
- https://holisticpestsolutions.com/why-are-cockroaches-so-hard-to-kill/
- https://www.realmissolliesoakland.com/what-scents-repel-cockroaches/
- https://www.bluefrosthvac.com/blog/choose-right-sump-pump-home/
- https://www.marylandsunrooms.com/blog/keep-bugs-away/
- https://www.pumpfundamentals.com/tutorial2.htm
- https://www.ready-able.com/ultimate-guide-to-well-pumps/
- https://www.terminix.com/cockroaches/what-causes-roaches-in-a-clean-house/
- https://lancaster.unl.edu/pest/roach/roach6eng.pdf
- https://www.engineersedge.com/hydraulic/hydraulic_head_pressure_10054.htm
- https://www.thepestinformer.com/pest-guides/cockroaches/will-cockroaches-ever-go-extinct/
- https://creativepumps.com.au/pond-help-information/pumping-head-height-explained/
- https://242pest.com/do-roaches-like-pine-sol/
- https://www.scienceabc.com/nature/animals/what-if-there-were-no-cockroaches.html
- https://www.rpssolarpumps.com/learn/how-to-calculate-total-dynamic-head/
- https://www.nationalgeographic.com/animals/article/shark-attack-threats-bull-sharks-location
- https://goaptive.com/do-dryer-sheets-keep-bugs-away
- https://www.rentokil.com/sg/blog/cockroaches/4-ways-cockroach-prevention-can-go-wrong
- http://csef.usc.edu/History/2017/Projects/J2306.pdf
- https://www.zoompumps.com/article/pump_head_calculation_formula.html
- https://www.terminix.com/roach-control/how-to-prevent-bringing-cockroaches-home/
- https://www.nwf.org/Educational-Resources/Wildlife-Guide/Fish/Bull-Shark
- https://www.voorhees.k12.nj.us/cms/lib/NJ01000237/Centricity/Domain/2840/adaptation%20specific%20animals.pdf
- https://www.terminix.com/cockroaches/facts/
- https://esc-sec.ca/2019/09/02/do-insects-feel-pain/
- https://www.moovein.com/blog/how-to-avoid-bringing-roaches-when-moving/
- https://pumpbiz.com/blog/gpm-pump-head
- https://www.nationalpump.com.au/calculators/pumping-terminology/
- https://pestpatrolsandiego.com/are-cockroaches-attracted-to-light-or-darkness/
- https://www.pumpsandsystems.com/total-head-pump-system
- https://ipestpros.com/cockroaches-occasionally-bite-humans/
- https://www.jjext.com/dirty-neighbors-cause-several-types-insect-infestations-home
- https://www.water-garden.co.uk/faq/what-does-max-head-mean
- https://www.nbcnews.com/science/science-news/shark-attack-lake-extremely-rare-it-happens-n181776
- https://drdeathpestcontrol.com/pest-exterminator-why-are-cockroaches-more-comfortable-at-night/
- https://www.reynoldspest.com/blog/post/are-cockroaches-dangerous-here-are-7-reasons-roaches-are-bad-for-your-health
- https://www.mayexterminating.com/boss-bugs/
- https://www.lawinsider.com/dictionary/total-discharge-head
- https://www.pumpfundamentals.com/download/book/chapter3.pdf
- https://greatlakes.guide/ideas/are-there-sharks-in-the-great-lakes
- https://www.chesapeakebay.net/discover/field-guide/entry/bull-shark
- https://www.lawnpluspestcontrol.com/blog/5-foods-that-attract-cockroaches/
- https://cockroachfacts.com/peppermint-oil-for-roaches/
- https://www.pestco.com/winter-cockroach-control/
- https://www.dodsonbros.com/led-lights-flying-insects/
- https://www.forbes.com/home-improvement/pest-control/how-to-get-rid-of-cockroaches/
- https://apnews.com/article/Fact-Check-Bull-Sharks-Great-Lakes-701871821910
- https://entomology.ca.uky.edu/ef614
- https://www.reynoldspest.com/blog/post/how-to-get-rid-of-roaches-naturally-no-harsh-chemicals
- https://natran.com/where-do-roaches-hide/
- https://www.westernexterminator.com/help-and-advice/pest-insights/cockroaches/cockroach-facts
- https://www.therecoveryvillage.com/mental-health/phobias/weird-phobias/
- https://www.shinjopump.com/news/what-is-pump-head-and-total-head-total-dynamic-head.html
- https://www.terminix.com/roach-control/removal/baby-roaches-in-kitchen-or-bathroom/
- https://indianapublicmedia.org/amomentofscience/cockroaches_useful.php
- https://en.wikipedia.org/wiki/Pressure_head
- https://www.ampest.com/blog/why-do-you-keep-finding-dead-cockroaches-in-your-house/
- https://www.science.org/content/article/sharks-sink-fresh-water
- https://www.mccallservice.com/blog/do-baby-cockroaches-mean-an-infestation/
- https://abc7.com/most-cockroaches-rats-rat-problem-cockroach/902272/
- https://www.abchomeandcommercial.com/blog/does-bleach-kill-roaches/
- https://www.bredapest.com/news/the-diet-of-a-common-cockroach
- https://www.sciencedirect.com/topics/earth-and-planetary-sciences/pressure-head
- https://www.certifiedtpc.com/blog/you-would-not-believe-why-cockroaches-gravitate-to-our-ears-while-we-sleep/
- https://www.dutchsharksociety.org/can-bull-sharks-live-in-freshwater/
- https://www.callnorthwest.com/2020/10/is-there-a-cockroach-season/
- https://www.abchomeandcommercial.com/blog/why-do-cockroaches-come-out-at-night/
- https://www.sintechpumps.com/pumps/calculate-your-pumps-flow-rate/
- https://www.sanjoaquinpestcontrol.com/blog/top-7-places-cockroaches-like-to-hide
- https://nchh.org/information-and-evidence/learn-about-healthy-housing/health-hazards-prevention-and-solutions/cockroaches/
- https://kids.nationalgeographic.com/animals/fish/facts/bull-shark
- https://www.callnorthwest.com/2021/06/does-hot-weather-bring-out-cockroaches/
- https://www.prevention.com/life/a36385229/led-lights-bugs/
- https://engineeringlibrary.org/reference/centrifugal-pumps-fluid-flow-doe-handbook
- https://www.wikihow.com/Keep-Roaches-Away-from-Your-Bed
- http://npic.orst.edu/faq/roach.html
- https://www.go-forth.com/blog/post/what-do-roaches-hate-columbia-exterminators
- https://www.webmd.com/a-to-z-guides/about-the-american-cockroach
- https://www.extermpro.com/household-products-that-can-kill-pests/
- https://en.wikipedia.org/wiki/Total_dynamic_head
- https://www.nwcg.gov/course/ffm/squirt-water/35-drafting-guidelines
- https://pctonline.com/news/bugs-national-problem-basf-survey/
- https://www.alz.org/alzheimers-dementia/what-is-dementia/types-of-dementia/normal-pressure-hydrocephalus
- https://www.health.com/condition/sexual-health/vaginal-discharge
- https://natran.com/what-scents-do-cockroaches-hate/
- https://www.self.com/story/how-much-discharge-is-normal
- https://www.millenniumpool.com/blog/how-many-hours-should-i-run-my-pool-pump/
- http://www.ramueller.com/pump-handbook/centrifugal-pump-fundamentals-head/index.html
- https://www.zappest.com/about/our-blog/top-5-causes-roach-infestation
- https://en.wikipedia.org/wiki/Freshwater_shark
- https://www.realmissolliesoakland.com/why-dead-cockroaches-disappear/
- https://www.413pestfree.com/blog/post/stomping-out-springfield-s-cockroaches
- https://premiumtpc.com/5-ways-cockroaches-get-into-your-home/
- https://en.as.com/latest_news/why-you-shouldnt-squash-a-cockroach-n/
- https://maggiesfarmproducts.com/blogs/bug-help/hard-to-get-rid-of-cockroaches
- https://www.crompton.co.in/blogs/pumps/choose-domestic-water-pump-buying-guide/
- https://pursuit.unimelb.edu.au/articles/would-cockroaches-really-survive-a-nuclear-apocalypse
- https://www.thepestinformer.com/pest-guides/cockroaches/why-do-cockroaches-fly-towards-you/
- https://www.pumpfundamentals.com/what%20is%20head.htm
- https://www.medicalnewstoday.com/articles/327379
- https://www.smithereen.com/blog/how-long-pest-control-treatments-last/
- https://sachempestcontrol.com/531-2/
- https://wastecorp.com/Pump-Support/Pump-Terminology
- https://pestech.com/online-guides/cockroaches/cockroach-life-cycle/
- https://www.lakenormanpest.com/blog/post/30-mind-blowing-facts-cockroaches
- https://www.lakenormanpest.com/top-10-things-must-know-cockroach-bites
- https://www.quora.com/How-can-we-differentiate-between-suction-and-discharge-in-centrifugal-pumps
- https://pfharris.com/blogs/bug-blog/kill-cockroaches-instantly
- https://www.pestclinic.com.sg/why-stepping-on-a-cockroach-is-a-bad-way-to-eliminate-it/
- https://www.rameshpump.com/wp-content/uploads/2016/03/Total-Head-Calculation-3-3.pdf
- https://242pest.com/will-keeping-lights-on-keep-roaches-away/
- https://www.researchgate.net/publication/257066921_Discharge_and_Pressure_Head_Relationship_for_a_Given_Set_of_Sprinkler_Irrigation_System
- https://www.jcehrlich.com/help-and-advice/blog/cockroaches/how-can-cockroaches-make-you-sick
- https://www.healthline.com/health/are-cockroaches-dangerous
- https://www.terminix.com/cockroaches/behavior/do-cockroaches-sleep/
- https://callcontractorsbest.com/what-smells-repel-cockroaches/
- https://www.quora.com/How-far-can-a-pump-push-water-vertically
- https://www.terminix.com/roach-control/keep-cockroaches-out-of-home/
- https://www.nhs.uk/conditions/intracranial-hypertension/
- https://www.thisoldhouse.com/pest-control/reviews/how-to-get-rid-of-roaches
- https://blog.ravpower.com/2018/12/extend-battery-life-discharge-completely/
- https://www.wikihow.com/What-to-Do-if-You-See-a-Cockroach
- https://www.callnorthwest.com/2021/03/does-one-cockroach-mean-an-infestation/
- https://www.zappest.com/about/our-blog/ignore-cockroach-problem
- https://phscutlass.com/13015/uncategorized/is-feeling-guilt-rational-when-killing-household-pests-rational/
- https://www.guaranteedpestserviceok.com/blog/post/six-early-warning-signs-of-cockroaches-in-your-oklahoma-city-home
- https://joshuaspestcontrol.com/blog/4-unexpected-dangerous-truths-about-cockroaches/
- https://www.housedigest.com/935469/the-5-best-ways-to-keep-bugs-away-from-your-porch-lights/
- https://japantoday.com/category/tech/tohoku-university-team-discovers-blue-light-is-effective-at-killing-insects
- https://www.orkin.com/pests/cockroaches/do-cockroaches-bite-or-sting-humans
- https://www.nuclear-power.com/nuclear-engineering/fluid-dynamics/centrifugal-pumps/pump-head-performance-curve/
- https://www.terro.com/articles/debunking-cockroach-myths
- https://www.peta.org/issues/wildlife/dealing-household-guests/cockroaches/
- https://home.howstuffworks.com/home-improvement/household-hints-tips/insect-control/cockroaches-during-the-day-is-a-sign-of-a-infestation.htm
- https://www.daepumps.com/resources/how-calculate-discharge-head-industrial-pump/
- https://thepestrangers.com/top-7-signs-of-a-cockroach-infestation-and-what-to-do/
- https://empoweringpumps.com/head-vs-pressure/
- https://www.go-forth.com/blog/post/how-many-roaches-is-an-infestation
- https://www.terminix.com/blog/bug-facts/are-cockroaches-attracted-to-light/
- https://mandmpestcontrol.com/what-attracts-cockroaches-in-your-home/
- https://www.quora.com/What-happens-when-a-pump-provided-has-a-greater-head-capacity-than-actual-head-needed
- http://mit.edu/evt/summary_battery_specifications.pdf
- https://www.trianglepest.com/blog/10-interesting-facts-about-roaches
- https://www.livspace.com/in/magazine/home-remedies-cockroaches
- https://www.mccallservice.com/blog/5-things-that-attract-cockroaches/
- https://pestwisdom.com/sleep-peacefully-with-cockroach-in-your-room/
- https://cockroachfacts.com/cockroach-lifespan-how-long-do-cockroaches-live/
- https://fastactionpestcontrol.com/what-attracts-cockroaches-to-your-home-a-prevention-guide/
- https://www.moglix.com/alp/water-pumps-0-5hp
- https://www.rentokil.com.sg/blog/4-ways-cockroach-prevention-can-go-wrong/
- https://pratoerboso.com/en/submerged-3sr/3339-pedrollo-3srm-2-21-075-hp-single-phase-submersible-pump.html
- https://www.aikenpest.com/how-dangerous-are-cockroaches-in-aiken
- https://garfieldpestcontrol.com/10-interesting-facts-about-cockroaches/
- https://thepestrangers.com/how-to-keep-cockroaches-away-9-easy-methods-to-keep-bugs-away/
- https://www.gemmecotti.com/pump-pressure-vs-head/
- https://www.zappest.com/about/our-blog/where-do-cockroaches-hide
- https://www.terminix.com/roach-control/what-attracts-cockroaches/
- https://smithspestmanagement.com/blog/post/how-to-get-rid-of-roaches-in-your-home/
- https://www.sciencedirect.com/topics/earth-and-planetary-sciences/hydraulic-head
- https://a-z-animals.com/blog/when-is-cockroach-season-in-california/
- https://edurev.in/t/101165/Pressure--Elevation-and-Total-Heads-Soil-Mechanics
- https://www.newsobserver.com/news/local/article262341587.html
- https://maggiesfarmproducts.com/blogs/bug-help/cockroaches-in-apartments