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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Scuba need*:

TANK: Scuba need
OXYGENTANK: Scuba need*
AIRPIPE: Scuba need
MASK: Scuba diving need
WETSUIT: Scuba diver's need
AIRTUBE: Scuba diver's need