ring ▁and ▁cap elin ▁migr ate ▁around ▁substantial ▁parts ▁of ▁the ▁North ▁Atlantic ▁ocean . ▁The ▁cap elin ▁for ▁example ▁spawn ▁around ▁the ▁southern ▁and ▁western ▁coast s ▁of ▁I cel and ; ▁their ▁lar va e ▁dr ift ▁clock wise ▁around ▁I cel and , ▁while ▁the ▁fish ▁sw im ▁north wards ▁towards ▁Jan ▁May en ▁island ▁to ▁feed , ▁and ▁return ▁to ▁I cel and ▁parallel ▁with ▁Green land ' s ▁east ▁coast . ▁ ▁In ▁the ▁' s ard ine ▁run ', ▁bill ions ▁of ▁Southern ▁African ▁pil ch ard ▁S ardin ops ▁sag ax ▁spawn ▁in ▁the ▁cool ▁waters ▁of ▁the ▁Ag ul has ▁Bank ▁and ▁move ▁north ward ▁along ▁the ▁east ▁coast ▁of ▁South ▁Africa ▁between ▁May ▁and ▁July . ▁ ▁In ▁insect s ▁ ▁Some ▁wing ed ▁insect s ▁such ▁as ▁loc ust s ▁and ▁certain ▁but ter f lies ▁and ▁drag on f lies ▁with ▁strong ▁flight ▁migr ate ▁long ▁distances . ▁Among ▁the ▁drag on f lies , ▁species ▁of ▁Lib ell ula ▁and ▁Sym pet rum ▁are ▁known ▁for ▁mass ▁migration , ▁while ▁P ant ala ▁fla ves c ens , ▁known ▁as ▁the ▁glo be ▁sk immer ▁or ▁wand ering ▁gl ider ▁drag on fly , ▁makes ▁the ▁longest ▁ocean ▁crossing ▁of ▁any ▁insect , ▁between ▁India ▁and ▁Africa . ▁Exception ally , ▁sw ar ms ▁of ▁the ▁desert ▁loc ust , ▁Sch ist oc erca ▁gre g aria , ▁fle w ▁west wards ▁across ▁the ▁Atlantic ▁Ocean ▁for ▁ 4 5 0