usually kept large pool occasionally kept open sea research public performances consist pool perform public larger parks marine parks theme parks animals attractions held captivity 1860s commercial opened popularity increased rapidly 1960s 1970s increasing concern animal welfare led regulation countries ultimately resulted closure despite trend widespread europe japan north_america common species kept relatively easy train long lifespan captivity trade internationally regulated aspects keeping captivity minimum size characteristics pools vary countries animal welfare perceived improved significantly decades animal rights groups consider keeping captive form animal abuse history held captivity north_america europe 1860s pair new_york museum kept paid entertainment founded florida discovered trained perform tricks recognizing success began keeping entertainment 1960s keeping entertainment purposes increased popularity movie subsequent television series exported europe early days grow quickly lack legislation lack concern animal welfare new legislation notably marine protection act united_states combined critical view animal welfare forced world close prominent example united_kingdom early 1970s traveling shows closed doors hungary closed chile costa_rica prohibited keeping captive currently exist europe japan mexico united_states home relatively large number design varied designs exist basic design public performances consists stands public semi circular pool glass walls allow underwater viewing platform middle trainers direct present water pools constantly filtered clean spectators temperature composition water controlled match conditions experience wild absence common international regulation guidelines minimum size pools vary countries indication pool sizes recommends pool surface area plus additional additional animal depth water volume additional additional animal conditions met standard considers pool size acceptable animals species species kept captivity small whale species cases word fitting true common species kept relatively easy train long lifespan captivity friendly appearance hundreds thousands live captivity world exact numbers hard determine known performances shows number kept captivity small especially compared number captive held kept captivity majority located parks united_states species kept captivity rough toothed lower numbers fewer captivity unusual rare hybrid known kept hawaii cross common hybrids reside captivity discovery cove trade capture early days wild caught coast florida established allows exception collection public display research purposes permit obtained captured american waters western countries breeding programs set provide new animals achieve sufficient birth rate prevent artificial occasionally use allows increase genetic diversity population having bring facilities trade regulated flora known cites endangered species included cites appendix case trade permitted exceptional circumstances species considered threatened extinction included case trade controlled order avoid incompatible survival species traded display captivity public use swimming interaction programs listed live trade continues live estimated worth thousand tens thousands dollars depending age condition prior training captures reported rise caribbean cuba recent years organized recent years solomon islands allowed collection export public display facilities law banned export ban seemingly overturned shipped mainly japanese obtain local drive hunts countries asia import japan american practice halted refused permit import caught japanese drive hunt criticism animal welfare animal welfare groups consider keeping captivity form animal abuse main arguments freedom movement pools regardless pool size wild swim hundreds miles day repetitive behavior captivity aggressive animals people cases behavior captivity results death lifespan captivity subject debate research shown lower survival rate captivity significant difference wild captive survival rates reflect global state affairs example captive facilities jamaica suffer extremely high mortality rates scientists suggest unusually high intelligence means recognized non human persons prohibited captivity grounds finding morally unacceptable captive entertainment purpose
Dolphinarium