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Chuck and I met a guy at the Georgia Aquarium recently who runs the whale shark exhibit. We asked him what the biggest threat to sharks might be — though after having written about 100 shark articles between us, we already knew the answer. It’s humans. That’s right, you human jerk, you’re the problem when it comes to sharks.
How can sharks smell blood from more than a mile away?
by Marshall Brain | March 2, 2009
You asked: How can sharks smell blood from more than a mile away? — Fisher, Collinsville, Miss. Marshall answered: Humans don’t have a particularly good sense of smell, and lots of animals blow us away in this department. Dogs, for example, can smell more things and are much more sensitive to smells in lower concentrations. [...]
You asked: Are there any sharks, other than bull sharks, that can survive in fresh water? — Jonnie, Grover Beach, Calif. Marshall answered: The bull shark actually handles both fresh and salt water. But there are also several shark species caller river sharks that live in fresh water. Like the freshwater dolphin that recently went [...]
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