Daily:Friday

Quest	Boss	Stamina	Battles	Difficulty	Notable Captures/Drops	Beli	EXP
Scissor Cavern, Entrance	Rainbow Hermit Crab	10	5	Rookie	Red Hermit Crab Blue Hermit Crab Green Hermit Crab Yellow Hermit Crab Black Hermit Crab Rainbow Hermit Crab Red Armored Crab Blue Armored Crab Green Armored Crab Yellow Armored Crab Black Armored Crab	335	299
Scissors Cavern, Inner Grotto	Two Random Lobsters	15	5	Veteran	Red Plated Lobster Blue Plated Lobster Green Plated Lobster Yellow Plated Lobster Black Plated Lobster	2040	1230
Scissors Cavern, Innermost Grotto	Rainbow Armored Crab				Rainbow Armored Crab

Notes

• 1 Rainbow Gem will be received upon first clear of each cavern
• Former Friday Limited Event(s) (Note: Since early November 2017, all Daily events, previously only available on specific days, are available each day). Scissors Cavern, Inner Grotto was not a regular Friday event, it used to appear only on some special Fridays (also for 24h). Around late 2016/early 2017 it became available on each Friday. It has no rainbow boss, just two chances of catching regular plated lobsters (there is no rainbow plated lobster in the game - yet). It was retired around mid-2017/ From mid-February 2017, Innermost Grotto was added, featuring Rainbow Armored Crab.
• Friday Island provides Evolver Characters (crabs and rarely, lobsters, the latter only in the Inner Grotto).
• Since recently (early 2016) turtles can appear on Fridays, too. See Daily:Monday for details.
• For tips on how to clear this quest quickly, see tips on fast farming of turtles in the article on Turtles (as crabs and lobsters have similar high defense to turtles, same logic applies).