This post has the solution for What whales were once thought to be crossword clue. The New York Times Mini Crossword is a mini version for the NYT Crossword and contains fewer clues then the main crossword. You can play the mini crossword first since it is easier to solve and use it as a brain training before starting the full NYT Crossword with more than 70 clues per day.
What whales were once thought to be
SOLUTION:FISH
Check the answers for more remaining clues of the New York Times Mini Crossword March 27 2021 Answers.