According to the text, how long have sharks been around for?

ana.rodriguez_r

mccann_jackalyn

uma.krishnamurthy

paulm

liafisikanasution90

kharrelson

neseloja

jim_caudill

holly

holly

sbarr

lsusie

ankita.sharma

Mrs Wallace

vcarnero

riddhi.rathore

felicia.reese

dvogt

lheeg