Cruise ships typically bring up images of all-inclusive buffets, tourists sporting white linen pants and vistas overlooking the Caribbean. But in the past few years, tour operators have created super-niche cruises to cater to travelers who are looking for more than just a relaxing seaside voyage.

• Knitting Cruise

  

  When: March 9 to April 6, 2019
  Where: San Diego, Hawaii, Tahiti and the South Pacific
  Cost:From $3,500
  On this 28-day excursion, you’ll be floating across the Pacific while mastering the art of knitting. The itinerary features dying yarn at a local wool company in Hanokka, Hawaii. Passengers will also get to hang out with rabbits and learn how Hula bunny yarn is made at a nearby farm. You’ll also be able to take daily knitting classes while enjoying the sights of French Polynesia.

• Zumba Cruise

  

  When: March 24 to March 29, 2019
  Where: Miami; Freeport, Bahamas; Labadee, Haiti
  Cost:From $730
  Shake your tail feather off at this Zumba-themed cruise, which features a dance party every morning, afternoon and evening throughout the five-day excursion. Sure, Zumba may not be as an intense of an exercise as, say, Cross Fit, but travelers who are looking to tone up for the new year can try a variety of Zumba classes involving, water, weights and core workouts taught by 50 instructors.

• Star Trek Cruise

  

  When: March 1 to 8, 2020
  Where: Miami; Punta Cana, Dominican Republic; San Juan, Puerto Rico; St. Thomas; Grand Bahama Island, Bahamas
  Cost:From $1,600
  Celebs William Shatner and Kate Mulgrew will headline this Star Trek-themed cruise. Highlights include Q&A sessions with the cast of the beloved TV series, an intergalactic gala, and of course, Star Trek-themed bars.

• 'Property Brothers' Cruise

  

  When: TBD
  Where: Miam; Cococay, Bahamas; Nassau, Bahamas
  Cost:From $809
  Even HGTV bros Jonathan and Drew Scott are cashing in on the cruise industry with their own specialty trip, called “Sailing with the Scotts.” Their inaugural cruise last December was sold out and passengers got to hang out with the reality star duo at a ’70s Disco Dance party, a design workshop and day of competitive beach games. “We love our fans and this is our chance to hang out with you for five days in the sun,” Drew told People. A tour date for their 2019 cruise has yet to be announced.

• Cat cruise

  

  When: October 12 to 17, 2019
  Where: Tampa, Florida; Key West, Florida; Havana, Cuba; Cozumel, Mexico
  Cost:From $527
  Strangely enough, you can’t bring your own kitten at this cat-themed cruise. However, guests will get to participate in group dining, cocktail mixers and trivia nights with fellow cat lovers. And guests will be able to print their pets’ faces onto custom T-shirts onboard.