They’re young and having a fin-tastic time in the Hamptons this summer.

Five baby great white sharks have been caught and tagged in the last few days by Ocearch, a shark research nonprofit, and they’ve been pinging up a storm as their fins break the water’s surface, revealing their location to satellite trackers.

Ocearch’s Montauk expedition, which started Aug. 5 and ends next week, comes after its first-ever trek to the Hamptons last summer to see whether the waters off Long Island are great white nursery grounds.

The answer was a resounding yes, as researchers reeled in seven males and two females.

“The waters off Long Island are the only known hot spot for juvenile white sharks in the North Atlantic,” said Tobey Curtis, a fisheries manager at the National Oceanic and Atmospheric Administration. “Understanding where, when, and how these sharks use this area can help us better predict how human activities might be impacting them.”

Male sharks Gurney, Bruin and JD, and Finn, the only female, all pinged Thursday just south of the Island.

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Mission — a male shark tagged Thursday afternoon — is not online yet, but the travels of Montauk’s other tagged great whites can be viewed at the Global Shark Tracker on Ocearch.org.

Bruin, for example, was off Martha’s Vineyard on Wednesday, only to ping south of East Hampton the next day.

Last summer here, Ocearch founder Chris Fischer named a male shark Paumanok, picking the suggestion out of about 1,000 submissions from Newsday readers and shark fans. It’s the name that some American Indians in a distant era called Long Island — it meant “island or land that pays tribute.”

Since being tagged last Aug. 23, Paumanok pinged four times. He was last heard Oct. 25, off Maryland.

Ocearch will likely keep summering in the Hamptons chasing great whites until it catches 20 females and 20 males less than a year old — a large enough study group to help build a picture of how young sharks live.