Those dramatic fins aren’t just for show. 🦁🐟 Red Lionfish have venomous spines that help protect them from predators in the wild. You can spot this striking species in our Industry & Habitat gallery! #CLEAquarium

How much do fish "parent?" Aquarist Ryan shares a little about the longear sunfish mating and offspring. Want to learn more this Mother's Day Weekend? We're open 9am - 5pm on May 9 & 10 with half off admission for moms/stepmoms/foster moms/grandmothers! youtube.com/watch?v=S7ZBF9UT…

Slow down and explore together this Mother’s Day Weekend. 🐟 Join us Saturday & Sunday, May 9 & 10 (9am–5pm) for parenting‑themed activities and half‑off admission for moms at the ticket counter. #cleaquarium #splashofwonder Details: greaterclevelandaquarium.com…

Weedy seadragons are masters of disguise, with leafy flaps all over their bodies that help them blend in with drifting seaweed. greaterclevelandaquarium.com… #CLEAquarium #NatureIsCurious #WeedySeadragon

Did we have some Earth Day E-Recycling for MCPC and Cleveland Zoo Society? Ummm . . . just a little. Our #cleaquarium Green Team was out there helping the gorillas.

Canalway’s annual RiverSweep is May 2! This annual litter cleanup protects the Cuyahoga River corridor and helps preserve public greenspace. Free shirts for volunteers, while supplies last. Register to volunteer online: canalwaypartners.com/riversw…

Really excited to cheer on the @cleguardians as they swim into the home opener ⚾️🐟 We’re ready to "sea" some big plays—let’s make waves, Cleveland 💙 #GuardsBall #cleaquarium #thelandforlife

Thinking about a future working with animals, science or the ocean? 🌊🐠 Join us for High School Career Day: Aquarium Career Quest! Meet aquarium professionals, explore careers and get hands-on experience. 🔗 greaterclevelandaquarium.com…

Up-close experiences let you really focus on the fish, appreciate encounters, discover your natural curiosity, and add a splash of wonder to your day by making memories together. Get closer at Greater Cleveland Aquarium. Open 10am - 5pm daily. greaterclevelandaquarium.com…

What can sea slugs teach us about healing? Researchers are studying a colorful sea slug with remarkable regenerative abilities—work that could offer clues for advancing regenerative medicine in humans. #natureiscurious 🔗 pew.org/en/research-and-anal…

Staying local this Spring Break? 🐠 Visit us daily from 10am–5pm (yes, even Easter!) for Spring Discovery Days, featuring animal encounters, partner popups, habitat feeds, discovery carts and a 4-page activity book. So go ahead — add a splash of wonder to your staycation.

Discover the tiny traits that allow animals to survive during #cleaquarium Homeschool Family Day - Wed., March 25. Drop-in educator-led activity 10am-12pm. Advance registration required. #homeschool greaterclevelandaquarium.com…

Surprising findings from the field 🐢Years of tracking turtles in northwest Ohio and southeast Michigan reveal concerning inbreeding among box turtles—raising important conservation questions. 🔗 phys.org/news/2026-03-herpet…

It's easy to miss the little things. 🔎 Take a closer look at small species during Spring Discovery Days at Greater Cleveland Aquarium, from now until April 12. Plan your @cleaquarium visit: greaterclevelandaquarium.com…

Coastal light pollution doesn’t just change the night sky—it can affect sharks’ biology. A new study found artificial light at night can suppress melatonin in sharks. #natureiscurious news.miami.edu/rosenstiel/st…

Answer 4 multiple choice trivia questions about some of the smaller species at Greater Cleveland Aquarium for a chance to win our Spring Discovery Days prize pack! Ages 18+. Enter by 4/12/26 here: greaterclevelandaquarium.com…

Good news for a critically endangered species. Endangered smalltooth sawfish—once wiped out of Florida’s Indian River Lagoon—are showing signs of returning. Researchers say young sawfish are using historic nursery habitats again! phys.org/news/2026-03-endang…

Baby tomato clownfish don’t just outgrow their stripes—they lose them because of social pressure. Find out out how social dynamics shape life underwater via Smithsonian Magazine smithsonianmag.com/smart-new…

Each #cleaquarium gallery tells its own story—freshwater and saltwater spaces designed to feel like the environments they represent. From Ohio Lakes & Rivers to Shark—where do you usually spend the most time? 📸 Coastal Boardwalk

A shark where scientists didn’t expect one. 🦈❄️ Researchers captured the first‑ever footage of a shark swimming in Antarctica’s near‑freezing waters—challenging long‑held assumptions about life in the Southern Ocean. #natureiscurious 🔗 npr.org/2026/02/18/nx-s1-571…