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Beluga whales crowd around a camera just beneath the water's surface.

As the beluga whales glide in, around, out of and back into their Abbott Oceanarium habitats, a swirl of long white shapes, you might wonder, “How many whales am I actually seeing? How do the trainers tell them apart?”

With a few key characteristics and enough whales within view to make comparisons, you can begin to figure out who’s who among Shedd’s eight belugas and even get some insights into their social relationships.

Beluga calf Atlas is still a light grey color at 1 year old.

Atlas (AT-luhs) is the youngest beluga at Shedd, born to mother, Bella (BEH-la), on August 21, 2020. The energetic calf initially weighed in at nearly 140 pounds and measured at over 5 feet long. While most beluga calves are usually born tail first – allowing them to unfurl their flukes before the final push and swim to the surface for that all-important first breath – Atlas arrived headfirst. Despite this, the calf immediately powered itself to the surface.

He is Bella’s first calf and Shedd’s first second-generation beluga. (Bella was also born at Shedd.) Atlas is the darkest gray and smallest beluga whale at Shedd Aquarium, but he continues to grow fast.

Aurek turns on his side so that a trainer can check his fin.

Aurek is the biggest beluga. In fact, he's the biggest animal at the aquarium. Born in 2003, the 14-foot, 2,100-pound whale arrived at Shedd in September 2017. Between his size and a distinctive gray smudge across the top of his head, just in front of his blowhole, he should be easy to spot. Or hear. Aurek has a wide range of vocalizations, including what can only be described as a donkey bray. He's very engaged in training sessions, especially with fast-paced and energetic interactions. You may hear him offer squeals and other vocalizations after getting positive reinforcement for a job well done.

Beluga Beethoven is the second largest beluga whale at Shedd, at 14 feet long.

Beethoven is the oldest adult male and the second largest. At 14 feet and 1,800 pounds, he is still standout big. He’s also the snowy whitest of the whales, with just a few gray dots and dashes splashed along his sides like Morse code. He was born in 1992.

Like the other belugas, Beethoven squirts water from his mouth, varying in force from a dribble to a drenching. This natural behavior, often used to uncover crustaceans in the sandy seafloor in the wild, is reinforced by the trainers, so you might see him do a jump with a squirt during an aquatic presentation.

“Beethoven's favorite enrichment items include car-wash 'kelp' sheets. He'll carry them around on his melon or on his back, like a cape.”

Maris Muzzy, whale and dolphin manager
Naya, with her distinctive "rails" on display, photographed underwater.

Naya (NYE-ah) was 3 years old and weighed about 700 pounds when she arrived at Shedd in 1992. Now she is the largest female and third-largest beluga, at 12 feet 3 inches and 1,600 pounds. She has rippling rolls of extra blubber, called rails, running the length of her sides, making her easy to identify either underwater or from the coastal walkway.

Naya is one of several belugas at Shedd whose name comes from the language of the Inuit, the indigenous people of the Canadian Arctic, where belugas are most populous. Her name means “little sister of a male.”

She is one of the most playful of the adult females, but she’s also incredibly responsible. She has helped the other females care for their calves, from babysitting while mom takes a break to producing milk to help nurse an infant. This kind of care for an unrelated young animal is called alloparenting, and it’s been observed in a number of cetacean species.

Kimalu, still slightly grey in coloring due to her young age, peers at an underwater camera, melon in close.

Kimalu (KEE-mah-LOO), whose name means “something or someone special” in the Inuit language, was born at Shedd on Aug. 27, 2012. Trainers' tip: Look for the dimples on her back. Another defining field mark is her light gray skin. Calves are medium to dark gray at birth, and their skin lightens as they mature. At 10 feet 2 inches, she’s the smallest of the belugas—except for mom Mauyak's new calf—but she's still growing, often in spurts. She's growing up in other ways too. When she was introduced to her new little brother, Annik, she quickly paired up with him, practicing skills like allowing him to slipstream with her. When she's not with the calf, look for her with Aurek.

“Kimalu really engages with new training. She’s also very social, being a young animal. In the last couple of years, she has become more independent. And she’s finding her place within the social hierarchy of the group.”

Angie Soliai, marine mammals trainer
Mauyak turns onto her side, displaying the spots along her sides.

Mauyak, who is Kimalu’s and Annik's mother, came to Shedd in 1997, when she was 16. Her name, pronounced MY-ack, means “soft snow” in the Inuit language. Mauyak is mid-sized among the belugas: 11 feet long and 1,500 pounds. Gray streaks along her off-white sides make her easier to identify.

Outside of sessions, Mauyak is frequently spotted spyhopping, or popping her head out of the water, and squirting, said senior trainer Angie Soliai. You might also see the playful whale rubbing her body on a giant soccer ball or pushing toys around on her melon or back.

Listen for her too. All of the belugas share an extraordinary repertoire of vocalizations, including chirps, squeals and whistles, which earned this species the old-time mariners’ nickname of “canaries of the sea.” Mauyak does an especially fine, deep foghorn.

“The new calf is Mauyak's fourth at Shedd. Mauyak has proven herself to be an attentive and protective mother. Her experience shows in how well she expertly guides her calves through their critical milestones.”

Maris Muzzy, whale and dolphin manager
Kayavak peers upside-down at the camera, resting her melon on the rock at the side of her habitat.

Kayavak was born at Shedd on Aug. 3, 1999, making her the first beluga calf Chicagoans had the privilege of watching grow up. Today she is the third-oldest female in the beluga group. Another mid-sized whale, she is 11 feet 10 inches and 1,400 pounds. Look for the small white swoosh on her pale gray back between her blowhole and dorsal ridge.

Her name, pronounced KAH-yah-vok, is the Inuit word for “singing game that creates beautiful soft echoes.” True to her name, Kayavak often mimicks the sounds around her, a natural talent among beluga whales.

Bella lifts her head and tail from the water

The whale you might most often see pairing up with Kayavak is Bella. She was born seconds before the aquarium closed for the day on July 17, 2006. Today she's a mid-sized adult, 10 feet 6 inches long and weighing 1,200 pounds. But she's still young enough to have gray skin, although she’s not as dark as Kimalu, which should help you identify both of them. If you need more clues, Bella has a prominent melon, or forehead, and a white spot on her right side.

While the beluga “smile” is strictly a facial structure, it really suits Bella. From the time she was a calf, she has been playful and interactive with the trainers as well as with the other whales. A much younger Bella used to tag after then-teenaged Kayavak like an adoring kid sister. (They are not related.) The relationship seems to have matured as Bella and Kayavak did.

“Bella still likes to play the 'tail game.' She'll get a body rub and swim out until you can reach her tail and rub her tail down too.”

Angie Soliai, marine mammals trainer
A small grey beluga calf sticks its head out of the water

Annik (AH-nik) was born on July 3, 2019. The fast-growing male doubled his weight, from 150 pounds to 300, in his first three months, and grew 12 inches, to 6 feet long. Looking like a dark gray torpedo, he's easy to spot, although he moves fast, taking a break to nurse, then swimming off to explore or socialize with the other belugas. To save energy, he likes to hitch a ride, or piggyback, on mom or big sister Kimalu.

We hope this introduction to Shedd’s beluga whales helps you better connect with them as individuals and as a dynamic group. On your next visit, try to identify the whales using their size, markings and social pairings.

“We’re lucky at Shedd to have as large a population as we do,” says Maris.

You can get closer to beluga whales at Shedd Aquarium than you can on a whale-watching trip—face-to-face, in fact, at the underwater viewing area. The ability to closely observe and work with the belugas has enabled our scientists to gain knowledge about them that can be used to understand and protect beluga whales everywhere. Shedd’s belugas are ambassadors for their species, sparking compassion, curiosity and conservation.

―Karen Furnweger, web editor