
Lake Garda, from another perspective
GardaDiving is the brand of ATIS Diving Club dedicated to those who want to discover Lake Garda from an underwater perspective. Behind every dive there is a real school, made of people, experience and a passion for the lake.
One brand, one school
GardaDiving is the tourist face of ATIS Diving Club, a sports and social-promotion association (A.S.D./A.P.S.) recognised by the Italian Olympic Committee (CONI). ATIS is a diving school and dive centre open all year round on Lake Garda.
Through GardaDiving we tell the story of the lake to those who want to explore it underwater: try dives, guided excursions, courses and the most beautiful dive sites on Lake Garda — from wrecks to walls, from sunken statues to shoals.
- 2019
- On the lake since
- 4.9★
- 128 · on Google
- 12
- dive sites
- 15+
- years of experience
- 4
- international agencies
- 4
- languages spoken
Our story
From a personal venture to a reference point for diving on Lake Garda.
- 2018
The identity is born
The ATIS brand takes shape. The acronym, which started as “Alberto Tumminelli Underwater Instructor”, soon becomes “Tourist Underwater Diving Activities”.
- 2019
The school is founded
Official founding of the diving school and dive centre: a structured organisation dedicated to training, inclusion and promoting diving for everyone.
- 2021
HSA reference for Lake Garda
Founder Alberto Tumminelli becomes the sole HSA reference for Lake Garda and the Province of Verona, bringing diving to people with disabilities too.
- Today
The largest centre in Veneto
ATIS is today among the leading diving-training centres in the region, with a close-knit team and a community that lives the lake all year round.
We train divers from their very first breath underwater to advanced levels, with internationally recognised certifications that are also valid for public competitions and law-enforcement bodies.
- Recreational, technical and children's courses
- Recognised agencies: CMAS, NADD, HSA, IDEA
- First aid: BLS-BLSD and Oxygen Provider
- Freediving and snorkelling to explore the lake freely


Underwater, without barriers
ATIS Diving Club is HSA-certified (Handicapped Scuba Association) and authorised to train and certify divers with motor and sensory disabilities — including blind divers — as well as psychological and relational ones. Underwater there is no weight: the lake becomes a place of freedom for everyone.
“We break down every barrier, both physical and mental.”

The founder
Alberto Tumminelli
Founder and director
Over 15 years of experience in the field and five published books on diving, leadership and applied psychology. He leads ATIS with a simple idea: diving is a school of trust, self-control and respect, in and out of the water.
- ITC Staff Trainer NADD
- Instructor Trainer HSA
- BLS-BLSD Instructor
- Author of 5 books on diving
The team
Instructors, guides and enthusiasts who live the lake all year round.

More than a school, a big family.

Alberto Tumminelli
ITC Staff Trainer

Valentina Tumminelli
OWD Instructor

Santo Signorello
OWD Instructor

Gabriel Dalla Serra
OWD Instructor · Dive Buddy HSA

Simone Berti
Freediving Instructor

Lucia Gines
Assistant Instructor

Carlo Sandroni
Dive Master

Ercole Vanzo
Dive Master · Dive Buddy HSA

Nicola Venturini
Advanced Diver · Dive Buddy HSA

Alessandro Mailli
Advanced Diver

Valentina Morati
Advanced Diver

Marco Bendazzoli
First Aid Coordinator

Michele Tumminelli
Presidente · Web

Hildegard Kompatscher
Chef
Our values
Safety
Small groups, serviced equipment and procedures cared for in every detail.
Inclusion
Diving is for everyone: we break down barriers, both physical and mental.
Professionalism
Qualified instructors and internationally recognised certifications.
Respect for the lake
Environmental awareness and underwater clean-ups all year round.
Community
Events, outings and a family of divers who live Lake Garda together.
Passion
A love for the lake and for the joy of discovering it on every dive.
What they say about us
Into the blue… Fluttuare nella meraviglia del lago più bello d’Italia, il lago di Garda. ATIS Diving Club ha reso possibile un sogno che coltivavo da tempo! Staff preparato e accogliente, fantastica immersione alla Rocca di Manerba con compagni di avventura internazionali.
Atis, oltre a insegnarti a diventare un bravo subacqueo con istruttori professionali e di varia esperienza, diventa una grande famiglia: un punto di riferimento dove puoi partecipare a eventi tutto l’anno. C’è positività e voglia di fare con tutti.
Un’esperienza memorabile. Sono stato accolto calorosamente da Valentina e Alberto, che già prima avevano dimostrato cortesia e professionalità nei vari contatti telefonici: sempre disponibili, pazienti e chiarissimi nelle informazioni.
Persone molto gentili, bella immersione e posto piacevole. È stato comodo che tutti parlassero bene l’inglese, e Alberto persino un po’ di tedesco. Consiglio vivamente di venire qui! 🇮🇹🤿
Immergersi al lago con Atis è una garanzia! Scelta degli spot migliori e professionalità che contraddistingue il diving. Immersioni da 5 stelle!

See the lake underwater
Wrecks, walls and sunken statues of Lake Garda, told through our videos.
Visit the YouTube channel