The best replacement for dolphin is porpoise.

The best alternatives to dolphin are rated as following:
★★★★★  porpoise
★★★★  shark
★★  whale
★  swan
★  swan hotel
★  chrome
★  opera
★  firefox
★  aquabot
★  porpus
★  skyfire
★  dolphin jetpack
★  great white
  shark fin
  pcsx2
  dolphin hd
  unicorn
  dolphin mini
  killer whale
  mahi mahi
  human brain
  konqueror
  swan which is better
  sharks
  dolphin fish
  dugong
  firefox for android
  porpoise difference
  nautilus
  opera mini
  dolphin
  boat browser
  orca
  elgg
  puffin
  dolphinil
  shark who would win
  great white shark
  purpose

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

Other search terms related to dolphin and their ratings are:
★★★★★ wiimote
★★ ps3 controller
★★ sensor bar
★★ wii motion plus
★ xbox controller
motion plus
netplay
You have in mind a companion for dolphin and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of dolphin in all years. Click on graph for more.
dolphin
porpoise
shark