Name: Anglesey Sea Zoo
Rating: 5.0

Anglesey Sea Zoo

Anglesey Sea Zoo, Brynsiencyn, Llanfairpwll, Isle of Anglesey LL61 6TQ, UK

1-90 Years

Paid

Website

Contact

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Description

Anglesey Sea Zoo in Brynsiencyn, Isle of Anglesey, is the largest aquarium in Wales, dedicated to showcasing the best of British marine life. With over 40 tanks, it offers a unique chance to discover fascinating sea creatures from around the UK coastline, such as octopus, lobsters, seahorses, jellyfish, and conger eels. It’s an all-weather family attraction focused on fun, learning, and conservation.

Highlights include immersive aquarium zones like the Crashing Wave, Shipwreck, Shark & Ray Pool, and Big Fish Forest, as well as interactive rock pools. Visitors can join Seashore Safaris, where a biologist guides groups along the Menai Strait to discover wildlife hands-on. The site also features conservation areas including the Lobster Hatchery and British Seahorses exhibit.

Admission prices starts from Adults £12.95, Children (3–15) £11.50, Seniors/Students £11.95, Family (2+2) £46.95, and under-3s free. All tickets are valid for 6 days after purchase.

Overall, Anglesey Sea Zoo offers a fun mix of discovery, education, and hands-on experiences, making it perfect for families and wildlife enthusiasts. With engaging exhibits, practical safaris, and birthday party packages, it’s a must-visit attraction on Anglesey.

Features

Paid
Host birthday parties: Yes

Features

Animals: Anglesey Sea Zoo showcases an incredible collection of British marine wildlife in its Meet the Critters experience—featuring species such as moon jellyfish, snakelocks, beadlet, plumose, and dahlia anemones, Dead Man’s Finger coral, as well as European lobsters, spiny spider crabs, common prawns, edible crabs, spiny (crawfish) lobsters, spiny squat lobsters, and sea toad spider crabs, all viewable in their dedicated tanks.
Aquarium Areas: Anglesey Sea Zoo features around 40 tanks showcasing native British marine life across immersive zones such as the Front Room (with pier and lobster tanks), the dramatic Crashing Wave, No Bone Zone with invertebrates and jellyfish, the Breeding & Conservation area for young and rare species, the atmospheric Shipwreck housing conger eels and spider crabs, a working Food Preparation Area, Quarantine tanks, the Lobster Hatchery, British Seahorses exhibit, the tumultuous Second Wave, the Shark & Ray Pool, the lush Big Fish Forest, and interactive Rock Pools—each revealing fascinating marine stories and conservation alike.
Seashore Safaris: A practical educational package that enables the learners to be hands on during the learning process! A biologist will take the learners down to the Menai Strait at low tide to explore and identify animals along the shoreline. This is finished with a dip in the rock pools to see the varying life found between different ecosystems! Safaris are usually 60 minutes including time for equipment organisation, and are weather dependent.

Facilities

Parking: Parking is available free of charge. EV charging stations also available.
Food & Drinks: On-site cafe available.
Toilets: Toilets are found by the Admissions desk and also at the Gift Shop. Baby changing facilities in both Ladies toilets, as well as at the Gents toilets at the Gift Shop.
Picnic Area: They have outdoor picnic tables so you can bring your own lunch!

Website

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Price

Price: Paid

Price Details

Adult: £12.95
Child (3-15): £11.50
Under 3: Free
Family (2+2): £46.95
Senior/Students: £11.95

All standard and family tickets are valid for 6 days after day of purchase.

Pricing URL: https://www.angleseyseazoo.co.uk/visiting/opening-times-prices/

Birthday Parties

Offer Birthday Parties: Yes

Birthday Party Details

Anglesey Sea Zoo offers three Birthday Party Packages: Bronze (£100 for up to 10 children) includes 4 hours of private use of the café’s top deck and a bouncy castle (weather permitting); Silver (£185) adds free Sea Zoo admission for all guests and parents; and Gold (£285) includes everything in Silver plus full party food and drinks. Optional extras are available for purchase, including cake, gift bags, decorations, and fun add-ons like crazy golf or candy floss machines.

Visit the website for more information.

Open 10:00 – 16:45

Address: Anglesey Sea Zoo, Brynsiencyn, Llanfairpwll, Isle of Anglesey LL61 6TQ, UK

Post Code: LL61 6TQ

Council: Isle of Anglesey

County: Gwynedd

The Anglesey Sea Zoo is clearly sign posted on brown tourist information road signs all the way from all major road access routes from the Britannia Bridge, and on arrival is easily recognised by its twin flagpoles flying the Welsh and Sea Zoo flags as well as Sea Zoo signage and posters. From the main gate the distance to the entrance is 200m over a level tarmac road.
Take the A55 across the Britannia Bridge on to Anglesey, then follow the brown lobster tourist information signs at junction 7 along the A4080 from Llanfairpwll to Brynsiencyn. Follow the brown lobster sign at the Y Groeslon pub down to the coastal road that leads to our entrance at the water’s edge.

By Bus: currently the No. 42 bus departs from Bangor Clock and arrives in Brynsiencyn, which is approximately 1 mile or 20 minutes on foot, from the aquarium. The bus stops in the village are located near to the Y Groeslon pub, and from there, the brown and white lobster signs can be followed to the Sea Zoo.
By Train: are not very practical for visiting the Anglesey Sea Zoo as they do not necessarily fit in to the bus timetable. The nearest main station is Bangor, with Llanfairpwll being the closest request stop station on Anglesey. It is then possible to take a bus from Llanfairpwll to Brynsiencyn on the service mentioned above. However, this service does leave the passenger approximately 1 mile away from the Anglesey Sea Zoo.