Naked Science Forum

Life Sciences => Marine Science => Topic started by: Mariana on 20/02/2019 09:23:27

Title: Do sharks only eat live fish?
Post by: Mariana on 20/02/2019 09:23:27
Jon wants to know:

Do sharks only eat live fish? Or could they be more opportunistic, such that a dead fall would provide reason to linger in an area?

Do you know the answer?
Title: Re: Do sharks only eat live fish?
Post by: evan_au on 20/02/2019 10:01:44
Sleeper sharks have been known to eat dead whales...
See: https://en.wikipedia.org/wiki/Whale_fall

Many sharks have sensors in their nose to detect electrical activity in muscles, and these sensors would not be triggered by dead bodies - but many sharks are also sensitive to blood, and this would often attract them to dead bodies....
Title: Re: Do sharks only eat live fish?T
Post by: flummoxed on 17/03/2019 17:41:02
Jon wants to know:

Do sharks only eat live fish? Or could they be more opportunistic, such that a dead fall would provide reason to linger in an area?

Do you know the answer?

Yes they eat dead fish, and if they arent dead when they start eating them, they are when thety are finished :)

Title: Re: Do sharks only eat live fish?
Post by: evan_au on 17/03/2019 19:16:43
Those looking to catch and/or video sharks often dump dead fish or blood into the water to attract sharks.

Those scents of the recently-dead will attract sharks from a considerable distance.
Title: Re: Do sharks only eat live fish?
Post by: chiralSPO on 17/03/2019 19:26:41
Sharks are known to be particularly non-picky eaters. There are many reports of sharks found with objects in their stomachs that were never alive (and I don't just mean bits of plastic).

https://www.sharksider.com/14-weirdest-things-sharks-eaten/
Title: Re: Do sharks only eat live fish?
Post by: Reggy777 on 06/05/2019 12:05:24
Sharks eat ALL fish (dead and live), many times saw how they feed sharks in the oceanarium near me
Title: Re: Do sharks only eat live fish?
Post by: Pregnancer on 07/05/2019 12:46:17
Sharks are opportunistic feeders, but most sharks primarily feed on smaller fish and invertebrates. Some of the larger shark species prey on seals, sea lions, and other marine mammals. Sharks have been known to attack humans when they are confused or curious.