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What’s so special about this fish? It’s all about the little yellow tag. (Metropolitan Water Reclamation District)

A largemouth bass fished from the Skokie River provided proof of the success of a 2018 dam removal on the Chicago River.

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The Shedd Aquarium has shared new photos of its baby penguins, which hatched in May. (Shedd Aquarium / Brenna Hernandez)

Like any proud new parent, the Shedd Aquarium is sharing adorable photos of its newest arrivals: four Magellanic penguin chicks, all of which hatched in mid-to-late May.

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Chorus frog. (Peter Paplanus / Flickr)

The chorus frog has been filling forest preserves with the sound of its mating calls. Here’s why that’s such good news.

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The round goby. (Credit: Shedd Aquarium)

The Great Lakes are home to an estimated 180 invasive species. Freshwater biologist Scott Colburn, who recently joined a research team at the Shedd Aquarium, tells us about the latest efforts to protect Lake Michigan from invasive fish, mussels and more.

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(Courtesy Shedd Aquarium)

Ty, an 18-year-old California sea lion, had been living at the aquarium since 2005. Animal caretakers and veterinarians began monitoring him last week after noticing an uncharacteristic decline in his appetite.

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Two southern sea otter pups arrived at Shedd Aquarium in July after being rescued in California. (Brenna Hernandez / Shedd Aquarium)

No makeup was necessary for a pair of fuzzy sea otter pups the aquarium showed off to the media this week. “They get cuter every day,” said Tracy Deakins, a senior trainer of otters and penguins.

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Artwork made by students from across the world is on display at Shedd Aquarium. (Joshua Ford / Bezos Family Foundation)

The massive art project that got the attention of students across the globe is part of an educational initiative aimed at preserving oceans and the people who live closest to them.

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Two sea otter pups arrived at Shedd Aquarium on July 8, 2019, after being rescued in California. (Brenna Hernandez / Shedd Aquarium)

Two sea otter pups rescued recently off the coast of California have a new home in Chicago where they are now “thriving,” according to the aquarium.

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Restoring the Chicago River has been a project many decades in the making. One of many organizations taking part in that effort offers a water-level view of the work underway. We go for a look.

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A red wolf pup at Lincoln Park Zoo (Christopher Bijalba / Lincoln Park Zoo)

From rare blind salamanders to adorable red wolf pups, here’s our guide to the newest and most unique animals to visit in and around Chicago. 

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Nickel, a green sea turtle rescued off the Florida Gulf Coast in 1998. (Courtesy Shedd Aquarium)

This massive Chicago aquarium was the world’s largest when it opened to the public in 1930. Today it holds 5 million gallons of water and features a dazzling array of creatures. Learn more fun facts about the Shedd.

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A rescued sea lion pup receives fluids in a warming pool at Channel Island Marine & Wildlife Institute in California. (Brenna Hernandez / Shedd Aquarium)

The response by animal care specialists from Shedd and other institutions comes amid reports of an abnormally large number of sick adult California sea lions and malnourished pups. 

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A pair of sibling Magellanic chicks hatched this month at Shedd Aquarium. (Brenna Hernandez / Shedd Aquarium)

Both penguin chicks came from eggs laid by the same pair of penguins, Chile and Jr. The hatchlings are the second and third Magellanic penguins born and bred at Shedd Aquarium. 

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Mauyak, one of eight beluga whales at Shedd Aquarium (Brenna Hernandez / Shedd Aquarium)

Mauyak, a 38-year-old beluga whale, is already mother to 6-year-old Kimalu and is expected to give birth again this summer. 

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To monitor the development of penguin eggs, Shedd Aquarium staff use a process known as candling, which involves holding a strong light to the egg to observe inside. (Brenna Hernandez / Shedd Aquarium)

In a process known as egg candling, the aquarium’s animal care staff use a high-powered light to observe the inside of growing penguin eggs to determine whether they are fertile and monitor their development. 

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(Brenna Hernandez / Shedd Aquarium)

A handful of museums and cultural institutions in and around Chicago are offering free admission to workers affected by the ongoing federal government shutdown. 

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