The 24-year-old former Bath participant and Celebrity X Factor contestant was last seen at The Old Irish Pub in Barcelona on October 29.
It came after it emerged cruise ship staff reported trying to save a man who was in the water near Barcelona’s industrial port.
Davis’s passport was additionally discovered close by.
Weeks after Levis’ household complained concerning the “slow” response of Spanish authorities, with the search tied up in forms, divers launched the search of the port of Barcelona and the close by Llobregat Delta.
A spokesman for the Mossos d’Esquadra regional police power stated: “The searches began this morning about 10am.
“We cannot say at this stage how long they will continue. They’re underwater searches involving divers.”
The police power added in a tweet confirming the seek for Levi: “We continue investigating the disappearance of a man on October 29.
“We have mobilised the Maritime Police and the Aquatic Unit to search the port of Barcelona and the Llobregat Delta.
“The case continues to be investigated.”
Local stories say police are anticipated to conduct searches over a number of days.
A spokesman for the power added: “The search is being conducted by the Mossos’ Maritime Police and the Aquatic Unit. It’s an underwater search with the Maritime Police in the boats and the divers involved belonging to the Aquatic Unit.
“The search is taking place because of the possibility this person could have fallen into the water, from information received following his disappearance, around the time he was last seen.
“Civil Guard and Coastguards carried out an initial exhaustive search but found no sign of him.
“The possibility objects or clothes belonging to the man who disappeared were not ruled out and today in the two areas we are mentioning this new search has begun as part of the investigation.
“The objective is to find any evidence that might support the theory of a possible accidental death by drowning.
“The Llobregat Delta is in the southern part of Barcelona where the movement of the waters mean investigators think there could be something in that area.
“The search began at 10am local time but I don’t have information at this stage about how long it will last. We are talking about an underwater search. Court of Investigation Number Seven which is the court overseeing this investigation is aware of today’s search.”
It is believed that Levi walked again down La Rambla and entered the industrial port along with his telephone final pinging a mast on the far finish of the port closest to the ocean entrance.
After assembly Spanish police the household have been informed 4 cruise employees noticed a person matching Levi’s description within the water shouting for assist in English at 6.30am on October 30.
In a press release, they stated: “A life jacket was thrown from the ship and emergency sea and air rescue services searched the area but they were unable to find him.”
His household criticised “slow” Spanish police with Levi’s mom Julie Davis telling The Sun: “It’s disheartening when you ask police questions and get very limited feedback.
“It’s been a total emotional rollercoaster.
“The way the evidence is pointing isn’t good but without a body, there’s just no way of knowing what’s happened.”
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