Based on the aggregated intelligence of 180,000-plus investors participating in Motley Fool CAPS, the Fool's free investing community, cruise operator Carnival (NYSE: CCL) has received a distressing two-star ranking.

With that in mind, let's take a closer look at Carnival's business and see what CAPS investors are saying about the stock right now.

Carnival facts

Headquarters (founded) Miami (1974)
Market Cap $25.7 billion
Industry Hotels, resorts, and cruise lines
Trailing-12-Month Revenue $16.0 billion
Management Chairman/CEO Micky Arison (since 2003)
CFO David Bernstein (since 1998)
Return on Equity (average, past 3 years) 8%
Cash/Debt $471.0 million / $9.5 billion
Dividend Yield 3%
Competitors Genting Hong Kong
Royal Caribbean Cruises
TUI AG

Sources: S&P Capital IQ and Motley Fool CAPS.

On CAPS, 25% of the 500 members who have rated Carnival believe the stock will underperform the S&P 500 going forward.

A couple of months ago, one of those bears, All-Star TerryHogan, touched on the stock's seemingly unsustainable valuation:

They have hedged fuel somewhat, but still have exposure to rising fuel costs. They currently trade at 18x the high end of their own guidance for 2012. I think that multiple is a bit high for their growth rate. If earnings came in below the low end of their range, that means their trading at over 20 x forward earnings. Probably won't nosedive because of the yield, but definitely not an outperformer. Over 5 years though it's probably a good business with boomer demographics.

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