Exhibit 23 - ---------- INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in Registration Statement No. 33-99112 and 333-6859 of Monterey Bay Bancorp, Inc. on Form S-8 of our report dated February 8, 2001, appearing in this Annual Report on Form 10-K of Monterey Bay Bancorp, Inc. for the year ended December 31, 2000. /s/ Deloitte & Touche LLP San Francisco, California March 22, 2001