No certificate of ownership shall be issued under this chapter for any “amphibious vehicle” for which a certificate of ownership may be issued by the department under other provisions of this code.
For the purposes of this section, an “amphibious vehicle” is a device by which any person or property may be propelled, moved, or drawn, both upon water and upon a highway on land.
Source:
Section 9872.5, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=VEH§ionNum=9872.5..