The music of the Regimental March of Her Majesty's Royal Marines is derived from two songs composed during the first half of the 19th c. The bulk is from "A Life on the Ocean Wave," music by Henry Russell, and the short central section is based on eight bars of "The Sea," music by Sigismund Neukomm (a pupil of Haydn).
The Sea, the sea, the open sea!
The blue, the fresh, the ever free,
The ever, ever free!

Lyr. Add: A LIFE ON THE OCEAN WAVE
Lyrics Epes Sargent, Music Henry Russell, 1838

*A life on the ocean wave!
A home on the rolling deep!
Where the scatter'd waters rave,
And the winds their revels keep!
Like an eagle cag'd I pine,
On this dull unchanging shore,
Oh! give me the flashing brine,
The spray and the tempest's roar!

**A life on the ocean wave!
A home on the rolling deep!
Where the scatter'd waters rave,
And the winds their revels keep,
The winds, the winds
The winds their revels keep!

Once more on the deck I stand
Of my own swift gliding craft,
Set sail! farewell to the land!
The gale follows fair abaft.
We shoot through the sparkling foam,
Like an ocean-bird set free,
Like the ocean-bird, our home
We'll find far out on the sea!

A life on the ocean wave! ---

The land is no longer in view,
The clouds have begun to frown;
But with a stout vessel and crew,
We'll say, Let the storm come down!
And the song of our hearts shall be
While the winds and the waters rave,
A life on the heaving sea!
A home on the bounding wave!

A life on the ocean wave! ---

* First four lines of verse repeated in some versions.
** The six-line verse used as a chorus is an addition to the poem by Henry Russell. The third and fourth lines of each verse are repeated in some arrangements.

Notes: In the Royal Marines, the arrangement was first used by the Chatham Division Band, RMLI.
http://www.royalmarinesbands.co.uk/references/FS_reg_march.htm
Regimental Marches

Russell composed the music while in New York; it was first published there in 1838 and dedicated to Mr. J. B. Green of Columbus, GA. Several copies of the sheet music are in the Levy Sheet Music Collection. http://levysheetmusic.mse.jhu.edu/cgi-bin/display.pl?record=182.018.000&pages=7