THESEA
Whatdoyouknowaboutthesea?Youmayhaveseenit.Someofushaveswumorbathedinit.Itlooksbeautifulonafinesunnydayanditcanbeveryroughwhenthereisastrongwind.Whatotherthingsdoweknowaboutit?
Ofcourse,theseaisverylarge.Inthewouldthereismoreseathanland.Theseacoversthreequartersoftheearth.
Theseaisalsoverydeepinsomeplaces.Itisnotdeepeverywhere;somepartsofitareveryshallow.Butinsomeplacesthedepthoftheseaisverygreat.Atonespot,nearJapan,theseaisnearly11kilometersdeep!Justthinkofit.Thehighestmountainintheworldisonlyabout9kilometershigh!
Ifyouhaveswuminthesea,youknowthatthewaterissalty.Rivercarrysaltfromthelandintothesea.Somepartsoftheseaaremoresaltythanotherparts.DoyouknowtheDeadSeainArabia?Itisverysalty.Swimmerscannotsinkinit!FishcannotliveintheDeadSea.It’sastrangesea.
Inmostpartsofthesea,therearealotoffishesandplants.Somelivenearthetopofthesea.Otherlivedeepdown.Nosunlightcanreaththedepthsofthesea,soitiscompletelydark.Strangefisheslivethere.Someareblind.Somehavetheirownlights.Somehavetheirownlights.Somehavegreatjaws.Withtheirgreatjaws,theycanawllowfishlargerthanthemselves.
Theseacanbeverycold.Deep-seadiversknowthiswell.Atthetopthewatermaybewarm.Thenasthediversgodown,theseabecomescolderandcolder.
Manyscientistsarenowmakingastudyofanimalandplantlifeinthesea.Theyhopetofindnewresourcesformankind.