Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
A cycle of fin movements in forward swimming: (a) holding up fins dorsally; (b) moving down anterior edge of fins, downward movement from lateral to posterior portions of fins; (c) wrapping whole fins ventrally; (d) moving up anterior border of fins, upward movement of lateral and posterior portions of fins and (e) holding up fins dorsally.
