▁road ▁traffic ▁provided ▁the ▁exc av ation ▁is ▁deep ▁enough ▁to ▁reach ▁solid ▁sub so il . ▁Gra vel ▁ram ps ▁are ▁subject ▁to ▁er os ion ▁by ▁water . ▁ ▁If ▁the ▁edges ▁are ▁retained ▁with ▁bo ards ▁or ▁walls ▁and ▁the ▁profile ▁matches ▁the ▁surrounding ▁beach ▁profile , ▁a ▁gra vel ▁r amp ▁may ▁become ▁more ▁stable ▁as ▁fin er ▁sed iments ▁are ▁depos ited ▁by ▁per col ating ▁water . ▁ ▁Long est ▁be aches ▁Among st ▁the ▁world ' s ▁longest ▁be aches ▁are : ▁ ▁E ight y ▁M ile ▁Beach ▁() ▁in ▁north - west ▁Australia ; ▁ ▁Pra ia ▁do ▁Cass ino ▁() ▁in ▁Brazil ; ▁ ▁P adre ▁Island ▁beach ▁( about ▁) ▁in ▁G ulf ▁of ▁Mexico , ▁Texas . ▁ ▁Nin ety ▁M ile ▁Beach , ▁Victoria ▁() ▁in ▁Victoria , ▁Australia ; ▁ ▁C ox ' s ▁B azar , ▁Bang l adesh ▁( ▁un bro ken ); ▁ ▁Play a ▁Nov ill era ▁beach ▁( about ▁) ▁in ▁Mexico . ▁▁ 9 0 ▁M ile ▁Beach ▁in ▁New ▁Zealand ▁(); ▁ ▁F ras er ▁Island ▁beach ▁( about ▁) ▁in ▁Queensland , ▁Australia ; ▁ ▁Tro ia - S ines ▁Beach ▁() ▁in ▁Portugal ; ▁ ▁the ▁Jersey ▁Sh ore , ▁ 2 0 4   km / 1 2 7 ▁miles ; ▁and ▁ ▁Long ▁Beach , ▁Washington ▁( which ▁is ▁about ▁). ▁ ▁Wild life ▁ ▁A ▁beach ▁is ▁an ▁un stable ▁environment ▁that ▁ex poses ▁plants ▁and ▁animals