PlaceSponge

for i=0, 3, 1 do
    success, detail = turtle.inspect()

    if(success and not (detail.name == "minecraft:water" or detail.name == "minecraft:flowing_water")) then
        turtle.turnLeft()
        turtle.turnLeft()
        break
    end
    turtle.turnLeft()
end

odd = true

for i=1, 15, 1 do
    turtle.select(i)
    item = turtle.getItemDetail()
    continue = item and item.name == "minecraft:sponge" and item.damage == 0
    while(continue ) do

        if(turtle.placeDown()) then
            turtle.digDown()
        end

        item = turtle.getItemDetail(i)

        continue  = item and item.name == "minecraft:sponge" and item.damage == 0

        if(continue  and not turtle.forward()) then
            for j=0, 1, 1 do
                turtle.turnLeft()
            end

            for j=0, 3, 1 do
                while(not turtle.down()) do
                    if(not turtle.forward()) then
                        if(not turtle.forward()) then
                            for j=0, 6, 1 do
                                turtle.up()
                            end
                            return
                        end
                    end
                end
            end
        end
    end
end