The best replacement for sharks is dolphins.

The best alternatives to sharks are rated as following:
★★★★★  dolphins
★★★★★  jets
★★★  whales
★★★  kings
★★  blackhawks
★★  red wings
★★  ducks
★  crocodiles
★  killer whales
★  kings tickets
★  capitals
★  flyers
★  fish
★  bony fish
★  oilers
  roosters
  canucks
  dolphin
  dinosaurs
  magic logs
  western province
  blues
  stormers
  monkfish
  alligators
  rocktails
  cheetahs
  cavefish
  dragons score
  detroit red wings
  stars
  jets crossword
  lobsters
  saracens
  leafs
  avalanche
  tigers
  anaheim ducks
  predators
  st george
  stingrays
  orcas
  bulls score
  sheep

Your alternative for sharks is not listed? Suggest!
Speaking about sharks, one probably shouldn't forget about surfers.

Other search terms related to sharks and their ratings are:
★★★★★ surfers
★★★ cage
You have in mind a companion for sharks and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of sharks in all years. Click on graph for more.
sharks
dolphins
jets