PBS11 小时
How paleontologists are using fossilized shark teeth to date the past
Sharks have ruled the Earth’s oceans for 400 million years and recent research on fossilized shark teeth has led to the ...
来自MSN2 天
Scuba Diving for $1,000,000 Dollar Shark Tooth!
Hunting for a Legendary $1,000,000 Shark Tooth! 🦈💰🤿 Deep beneath the ocean lies one of the rarest shark teeth ever, ...
The Conversation5 天
Fossil shark teeth are abundant and can date the past in a unique way
Our study was one of the first to date Florida coastal deposits using fossil shark teeth and a technique that looks at variations in ocean strontium. Strontium is a chemical element that occurs ...
'Ultimate ocean warrior': Colossal great white shark tracked off Florida coast. What to know
A mammoth 1,653-pound great white shark surfaced off Florida's coast Sunday. The shark is the largest male tagged by OCEARCH ...
Newly tagged great white shark pings close to Florida beach. Here's where and what to know
A 9-foot great white shark, recently tagged by OCEARCH, has made its way to Florida, sending pings from its journey along the ...
Biggest male great white shark tagged by OCEARCH pings again off Florida. Here's where
The largest male great white shark tagged by OCEARCH scientists has surfaced again off the North Florida coast.