people get the norovirus.etty: from outbreaks on a separate cruises last year to an ebola scare that created panic. >> we knew something bad was happening. betty: to the devastating crash of the costa concordia that killed 32 people and landed its captain in prison. and then there was the infamous "poop cruise." uphuman waste was piling outside of their doors. betty: when a power outage stranded 4000 passengers without food, water, or working toilets. that incident happened just months before carnival's ceo took the helm. as he told me, don't believe all the hype. arnold: 99.9% of everyone that cruises has a great time. betty: and it doesn't make the headlines. arnold: the 99.9% does not make the headlines. how many people are stuck on a runway in an airplane waiting to take off? how many times do they have a traffic jam that they are stuck in on a highway? those kinds of incidents, the concordia, that was an accident and a tragedy, and that was more serious, but it happens once in 100 years. betty: a relative

according to the cdc, ships sailing under the carnival flag were hit with 17 cases of norovirus in 2012safety is not the only issue these days. the industry is also fighting the perception that only a certain type of person climbs aboard to cruise. when i talk to people about going on a cruise, generally speaking, anecdotally, and not scientificly, the perception is negative of the cruising industry, that it is for senior citizens, that younger people don't go on cruises, or they read about the costa concordia. how do you change that perception? arnold: that is a challenge. we have 3.5% of the vacation population that goes cruising in a year. the fact is that most people love it. all these negative things really don't exist. betty: when we come back, arnold donald takes me on a tour to show me why carnival is the king of cruising. ♪ later, richard fain of royal caribbean. he's out to prove that in order to pull ahead, it's go big or go home. richard: they want the biggest and the best, and this is the biggest and best ship out there. ♪ betty: have you been on every single ship? when you

. ♪ ♪ ♪ ♪ if you want it ♪ ♪ go out and get it ♪ >> taking a look at the headlines, norovirus sickenedovered. >> the flu is a lot less common among adults than you may think. on average people over 30 come down with the flu about twice in a decade. children though get it about every other year and since it takes years to build up antibodies to ward off the flu. an important recall to know about. dream on me is recalling bass net to cradle products. it causes the fabric to drop and pose a risk that infants can fallout or suffocate. head to our website for more. >> the website allergy eats is out with the list of best restaurants based on how they accommodate customers with food allergies. chipotle mexican grail and pf changes, red robin, out back steak how the and mellow mushroom. check out what just hit the beach in panama city, florida. this almost-foot great white shark was hauled in after i group called dark side sharkers. they tagged and released it back into the gulf of mexico. wouldn't want to encounter that at the beach. i already feel like we're the most connected but i think t