be poised billow bore break breakers chop choppiness chopping sea comb comber crash dash dirty water eagre ebb and flow flounder gravity wave ground swell heave heavy sea heavy swell hobbyhorse lift lop lurch make heavy weather peak pitch pitch and toss plunge popple pound rear reel riffle ripple rise rise and fall rock roll roller rough water sea send smash surf surge sway swell swing tidal bore tidal wave tide wave toss toss and tumble trough tsunami tumble undulate undulation wallow water wave wave wavelet welter white horses whitecaps yaw