▁e co - system ▁of ▁India . ▁Its ▁ 6 7 2   km ² ▁of ▁mang ro ve ▁forest ▁and ▁wet land ▁provides ▁home ▁to ▁well ▁over ▁ 2 1 5 ▁species ▁of ▁birds ▁including ▁winter ▁migr ants ▁from ▁central - As ia ▁and ▁Europe . ▁Gi ant ▁salt ▁water ▁cro cod iles ▁and ▁a ▁variety ▁of ▁other ▁wild life ▁inhab it ▁this ▁e co - system ▁which ▁is ▁one ▁of ▁Asia ' s ▁most ▁spect ac ular ▁wild life ▁san ctu aries . ▁An ▁area ▁of ▁ 1 4 5   km ² ▁has ▁been ▁not ified ▁as ▁Bh it ark an ika ▁National ▁Park ▁vide ▁Notification ▁No . 1 9 6 8 6 / F ▁in ▁September ▁ 1 9 9 8 ▁by ▁the ▁government ▁of ▁Od ish a . ▁It ▁has ▁much ▁significance ▁with ▁regard ▁to ▁e colog ical , ▁ge omorph ological ▁and ▁bi ological ▁background ▁which ▁includes ▁mang ro ve ▁for ests , ▁rivers , ▁cre eks , ▁est u aries , ▁back ▁water , ▁acc ret ed ▁land ▁and ▁mud ▁fl ats . ▁Bh it ark an ika ▁National ▁Park ▁is ▁the ▁core ▁area ▁of ▁Bh it ark an ika ▁San ctu ary . ▁ ▁Bh it ark an ika ▁Wild life ▁San ctu ary ▁was ▁declared ▁vide ▁notification ▁No . 6 9 5 8 / FF ▁A H ▁D td . ▁ 2 2 . 0 4 . 1 9 7 5 ▁over ▁an ▁area ▁of ▁ 6 7 2   km ². ▁The ▁San