價格：免費
檔案大小：109.7 MB
版本需求：系統需求：iOS 10.0 或以後版本。相容裝置：iPhone、iPad、iPod touch。
支援語言：英語
For divers, students, anglers and anyone interested in rays. Identify ray species via family groups, body type, description or dichotomy key.
Ray families include:
Electric rays
Stingrays
Stingarees
Mantas
Mobulas
Eaglerays
Sawfish
Guitarfish
Skates
Shovelnose
and more
支援平台：iPhone, iPad