So I'm working an ocean beach today --one where I've seen spanish jump recently but not today. I'm throwing 1 oz. tins --20 lb braid to 20 lb 24 inch flouro leader fastened with a seven turn surgeon's knot. I land 2 small 3 lb blues no issues .Then I make a cast and as the lure settles I feel a couple of sharp twitches --I start to reel up feel the lure for a second then ...slack ---I reel up a cut end of braid ---that is the braid itself was cut . I'm thinking I was cut off by a mackerel . Is it a thing for them to slash the a line even a couple of feet from the lure ?