Anglesey Sea Zoo is a family-run aquarium beside the Menai Strait near Brynsiencyn, focused on the sea life found around Britain. More than 40 tanks recreate real habitats: a kelp forest, a wave tank, a shipwreck, rock pools and the open sea. Look out for seahorses, octopus, conger eels, spider crabs, jellyfish and huge lobsters.
Conservation work on site includes a seahorse nursery, the Lobster Hatchery of Wales, crawfish research and turtle rescue. Talks and feeds run through the day, usually at least three, and are included in the ticket.
Good to know
There is no need to book: you pay at the door. Standard and family tickets stay valid for 6 days after purchase. The adventure playground and bouncy castle are free for visitors, while Barti Ddu's Crazy Golf costs extra. Eat at the Rockpool Café or bring a picnic to the outdoor tables. Going round the aquarium once takes most people about an hour.
Where to go
The entrance is about 200m from the main gate along a level tarmac road, with admissions at the main entrance.
Opening times
Daily 10am–4.45pm
Prices
Standard (tickets valid 6 days after purchase): adult (16+) £13.95 · child (3–15) £12.50 · senior (60+) £12.95 · student/concession £12.95 · under 3s free · carers with valid proof free. Family: 1 adult + 1 child £25.95 · 1+2 £37.75 · 1+3 £49.95 · 2+1 £38.75 · 2+2 £50.75 · 2+3 £61.50. Season tickets (1 year): adult £43 · child £38 · senior/student £39 · family £78–£185. Groups of 10+ (1 day): adult £11.50 · child £9.50 · senior/student £10.50. Prices as published on 11 Oct 2026; no end date given.
Age suitability
Children under 14 must be accompanied by an adult, inside and outside.
Parking
Free car park, including coach parking, with EV charging points at the front of the building.
Step-free access
Yes, step-free
Access details
Level tarmac road (about 200m) from the main gate to the entrance, with a ramp into the building. The aquarium, outside areas and gift shop suit wheelchair users; the only steps are up to the pier tank viewing area (also visible from below) and the café's top deck. Two wheelchairs to borrow from admissions (can be reserved; no electric wheelchairs). Accessible toilet outside the main entrance, no RADAR key needed. Accessible counter at reception.
Toilets
Yes, including an accessible toilet
Facilities
Rockpool Café · Gift shop · Toilets · Accessible toilet · Baby change · Adventure playground · Bouncy castle · Crazy golf (extra charge) · Picnic tables · Free parking · EV charging · Dog pens
Dogs
Allowed with restrictions
Dog rules
Assistance dogs are allowed everywhere. Other dogs are not allowed inside, but can go round the outside areas on a lead (not the children's play area). Free shaded dog pens with water by the car park and main entrance; a padlock can be borrowed for a £5 cash deposit.
