Greater Cleveland Aquarium — 10 a.m. to 6 p.m. daily, last admission is at 5 p.m., Nautica Entertainment Complex, 2000 Sycamore St., Cleveland. Features more than 40 tanks of all sizes, which are home to thousands of living creatures including the Ohio-native brook trout, ferocious piranhas and sand tiger sharks that measure more than 7 feet. $21.95, $15.95 ages 2-12. www.GreaterClevelandAquarium.com.
Cleveland Museum of Natural History — Exhibitions on display through Sept. 1 are Megalodon: Largest Shark That Ever Lived; and Sharkabet: A Sea of Sharks From A to Z. Museum is at 1 Wade Oval Drive. Admission is $12 adults; $10 ages 3-18, college students and seniors; and free for children 2 and younger. www.cmnh.org.
10th Annual Community Outreach Festival — 9 a.m. to 9 p.m. today through Sunday, ball park at 1175 S. Hawkins Ave., Akron. Carnival rides, car show, Gospel Fest on Sunday and performances by PolymerCityRecords.com Label and Promotions R&B, gospel and rap artists.
Author Visit — 6 tonight at the Learned Owl Book Shop, 204 N. Main St., Hudson. G.T. Anders, author of The Tower of Babel, will be on hand to promote his Kickstarter event for his new novel. 330-653-2252.
Eat Yourself Super: A Superfoods Journey to the New You 21-Day Challenge — 6:30 tonight at the Hudson Library & Historical Society, 96 Library St., Hudson. Dr. Todd Pesek will sign copies of his book, Eat Yourself Super — One Bite at a Time. To registers, call 330-653-6658.
Touch a Truck — 11 a.m. to 1 p.m. Friday at the Quirk Cultural Center, 1201 Grant Ave., Cuyahoga Falls. An up-close experience with big trucks and equipment. 330-971-8225.
Polish American Club Fish Fry — 4:30-8 p.m. Friday at the Polish American Club, 472 E. Glenwood Ave., Akron. Starting at $7.95. 330-253-0496.
Ohio State Reformatory Ghost Hunts — Saturday at the Ohio State Reformatory, 100 Reformatory Road, Mansfield. Ghost hunts offer an overnight experience for those with serious interest in paranormal activity. $70; proceeds go to restore the structure. www.mrps.org.
Massillon Museum’s Island Party — 5:30 p.m. Friday on the museum’s lawn, 121 Lincoln Way E. Food and beverage service begins around 6 p.m. with Carlos Jones and the P.L.U.S. Band performing 7-11 p.m. Free. For more information, go to www.massillonmuseum.org.
St. Joseph Church Summer Festival — 6 p.m. to midnight Friday and Saturday, 1-10 p.m. Sunday at St. Joseph Catholic Church, 2643 Waterloo Road, Suffield. Bake Shoppe, posy post, grotto store, frog jumping, junior tractor pull, pie-eating contest, games and more. For more information, call 330-628-9941.
Orrville Community Theater presents I Know Who Sings That — 8 p.m. Friday at 307 Hostetler Road, Orrville. I Know Who Sings That is a game show hosted by Jay Boc. The show will have two teams of randomly selected audience members competing to win prizes based on their ability to identify musical artists. There will be two shows during the evening. Show admission is $5. For tickets, call 330-604-8504.
A New Adventure Widows & Widowers social group — 7:30 a.m. Saturday at Eat ’N Park, 200 Howe Ave., Cuyahoga Falls. 330-929-5430 or 330-630-9275.
Portage Lakes Dragon Boat Festival — Saturday at Turkeyfoot Lake in the Portage Lakes State Park. The day begins at 8:30 a.m. with a ceremonial “Awakening of the Dragons” followed by racing and other festival entertainment continuing until about 4 p.m. Admission is free for spectators. For more information, go to www.portagelakesdrive.com.
Unattached Seniors— 9 a.m. Saturday at the Waterloo Restaurant, 423 E. Waterloo Road, Akron. 330-644-6624.
A New Beginning Social Group for Widows and Widowers — 9 a.m. Saturday at Thano’s Restaurant, 71 Fifth St. SE, Barberton. 330-745-6239.
Widows & Widowers (SOS) Starting Over Socially Brunch & Dominoes — 10 a.m. Saturday at Perkins, 4896 Everhard Road, Belden Village. Participants pay for their meals. Information call, Norma at 330-452-5889 or Bernie at 330-477-5325.
The Gathering of Eagles XVII Air Show — 10 a.m. to 5:30 p.m. Saturday and 10 a.m. to 4 p.m. Sunday at Lost Nation Airport, 1969 Lost Nation Road, Willoughby. $13, $25 couples, $7 ages 4-12. For more information, go to www.usam.us.
World Beer Festival — 1 p.m. Saturday at North Coast Harbor Dock 32, Cleveland Browns North Parking Lot, Cleveland. General admission tickets are $40 and include a tasting glass and 40 taste tickets for 2 oz. samples from more than 200 world-class beers. For more information and tickets, go to www.worldbeerfestival.com.
Book Signing — 1 p.m. Saturday at the Learned Owl Book Shop, 204 N. Main St., Hudson. Jessica Bennett and Mandy Altimus Pond will sign copies of Modern Grimmoire: A Contemporary Anthology of Fairy Tales, Fables, & Folklore. 330-653-2252.
Hoover-Price Planetarium Shows — 1 p.m. Saturdays and 2 p.m. Sundays at the McKinley Presidential Library & Museum, 800 McKinley Monument Drive NW, Canton. Pluto? Again? through Sept. 8. 330-455-7043.
Bluegrass Saturday Nights— 7-11 p.m. Saturday at Homerville Community Center, state Route 301. All pickers welcome; open stage and jam rooms. 330-416-2222.
The Cleveland Museum of Art Second Sundays — 11 a.m. to 4 p.m. Sunday at the Cleveland Museum of Art, 11150 East Blvd. Family-friendly activities such as art-making, storytelling, scavenger hunts and movement-based gallery talks. 888-262-0033 or www.clevelandart.org.
Hungarian-American Festival — Noon to 8 p.m. Sunday at 2625 Copley Road, Copley Township. Music provided by Dick Jacoby, Al Zimmerman & the Senior Button Accordian Group and The Hungarians. Csardas Dance Company will perform at 3 and 5 p.m. Free admission.
Putting the Story in Storybooks — 5-7 p.m. Sunday at the Learned Owl Book Shop, 204 N. Main St., Hudson. With Lindsay Ward, author of When Blue Met Egg. Class is $45. Registration required, call 330-653-2252.
FolkNite — 7:30-10 p.m. Sunday at the Peninsula Art Academy, 1600 Mill St. W. Acoustic open jam with Greg Canda. 330-657-2248.
Ohio State Reformatory Ghost Walks — Mondays at the Ohio State Reformatory, 100 Reformatory Road, Mansfield. Ghost walks feature knowledgeable tour guides leading guests through the dark halls and corridors of the reformatory, highlighting spots where paranormal activity has been reported, while sharing stories or eerie experiences, murder and death. $15, $8 children. For more information and to reserve a spot, go to www.mrps.org.
Riverfront Cruise In — 5 p.m. Monday at Falls River Square, Front Street, Cuyahoga Falls. Car theme: Mustangs and Cougars. Free. For information, go to www.donsitts.com.
Zentangle Art Workshop — 6-8 p.m. Monday at the Hudson Library and Historical Society, 96 Library St. Certified Zentangle teachers Michelle Rodgers and Caty Zavodny will teach participants how to create Zentangle designs. Free. Registration required, call 330-653-6656, ext. 1010.
Monday Night Writers — 6-8 p.m. Monday at Peaberry’s Cafe, 4350 Boardman-Canfield Road, Canfield. The sessions include a mix of writing exercises, information on the creative and business aspects of writing, and group feedback on “works-in-progress.” $10. Registration preferred, call Nancy Christie at 330-793-3675.
Summit County Songwriters Circle Monthly Workshop — 7 p.m. Monday at the Quirk Cultural Center, 1201 Grant Ave., Cuyahoga Falls. For information, go to www.songwritersummit.com.
Carovillese Club Spaghetti Dinner — 4-7:30 p.m. Tuesday at the Carovillese Club, 570 E. Cuyahoga Falls Ave., Akron. $6 to $8.25. 330-929-6767.
Bridgestone Commercial Solution Firestone Drives America Tour Festival — 5-7 p.m. Tuesday, South Main Street from East Buchtel Avenue to East State Street, Akron. Includes Big Foot monster truck, inflatable tires and interactive displays and fireworks after the 7:05 p.m. Aeros vs. the Erie SeaWolves game. With the donation of a nonperishable food item, those going to the game will have a chance to win a VIP Aeros experience and a Turbo Prize Pack.
Widows & Widowers (SOS) Starting Over Socially Dinner/Meeting — 6 p.m. Tuesday at Primavera’s, 5382 Fulton Road, Canton. Participants pay for their meals. Reservations required. Information, call Norma at 330-452-5889 or Bernie at 330-477-5325.
Old Time, Celtic and Bluegrass Music Jam — 7-10 p.m. Tuesday at the College of Wooster, in the college snack bar, Mom’s Truck Stop, Lowery Center, Wooster. The College of Wooster Scottish Arts Society along with local community players sponsor musical jam sessions where guests may sit in. Information: Kim Tapie, 330-345-5208, or Charlene Adzima, 330-263-6504.
Summit County Historical Society Perkins Stone Mansion Tours — 1-3 p.m. Wednesdays, Thursdays and Fridays at the Perkins Stone Mansion, 550 Copley Road, Akron. $6, $4 seniors, $2 students. 330-535-1120 or go to www.summithistory.org.