Runners participate in the 2012 Chicago Marathon near the intersection of Clark Street and Diversey Parkway. (Benjamin Lipsman / Flickr)

Since the launch of #SheddTheStraw last spring, businesses across Chicago have taken steps to eliminate their use of single-use plastic straws. Now, one of Chicago’s biggest events is getting involved.

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

The aquarium is preparing for a new – and very large – resident whose arrival is expected next summer.

(Brenna Hernandez / Shedd Aquarium)

As part of a new partnership aimed at preserving the endangered Great Lakes species, the turtles will remain at Shedd until they are big enough to be released back into the wild at a protected site in DuPage County.

(Brenna Hernandez / Shedd Aquarium)

The aquarium’s initiative to offer free admission to Illinois residents this month has a new twist that could help you avoid rush-hour traffic.

(Courtesy Shedd Aquarium)

She is Shedd’s only full-time photographer, capturing images of the aquarium’s 32,000 animals from both in and out of the water. A conversation with Brenna Hernandez.

We bite into the science behind this summer’s blockbuster movie about the giant, prehistoric shark Megalodon with a Shedd Aquarium expert.

A group of Caribbean reef sharks swims in the Bahamas’ shark sanctuary, which prevents harvesting of shark species anywhere within a 630,000 square-kilometer safe haven of Bahamian waters. (Courtesy Shedd Aquarium)

With the 30th anniversary of the Discovery Channel’s popular “Shark Week” fast approaching, the Shedd Aquarium is calling on visitors to help protect a key habitat for “one of the world’s most misunderstood species.”

(Courtesy Shedd Aquarium)

In what is an extremely rare occurrence, a male weedy sea dragons recently accepted an egg transfer from a female and is now carrying 46 fertile eggs on his tail.

(Courtesy Shedd Aquarium)

Shedd Aquarium is rolling out several new outdoor programs this summer aimed at bringing Chicagoans closer to local waters and aquatic life.

The saddled puffer is one of 100 species that can be seen in “Underwater Beauty.” (Courtesy of Shedd Aquarium)

If, as they say, beauty is in the eye of the beholder, the beholder is given a lot to admire at the Shedd Aquarium’s newest exhibit, “Underwater Beauty.” We get a preview.

A Magellanic penguin chick hatched May 12 at Shedd Aquarium. (Courtesy Shedd Aquarium)

A new Magellanic penguin chick hatched Saturday at Shedd Aquarium, just hours before Mother's Day. 

(Dr. Matt O’Connor / ©Shedd Aquarium)

A Chicago-based animal care expert is playing a key role in an unprecedented effort to save thousands of critically endangered tortoises that were found in squalid conditions in an abandoned home off the southeast coast of Africa.

(Karen Murchie / ©Shedd Aquarium)

Why more than two dozen volunteers have been tracking migrations of white and longnose suckers, an often overlooked family of fish. 

(Brenna Hernandez / ©Shedd Aquarium)

New residents of the aquarium’s “At Home on the Great Lakes” exhibit are spending their first days bonding with their mother. 

(redlegsfan21 / Wikimedia)

In an effort to reduce plastic waste, the White Sox have become the first team in Major League Baseball to get rid of disposable straws for nearly an entire season.

(Courtesy Shedd Aquarium)

For the first time, Shedd Aquarium will host a full week of events leading up to Earth Day on April 22.