[Coral-List] low-cost , long term hydrodynamics measurement

[João Pedro de Brito Coutinho Ferreira]

Dear researchers
My name is João Pedro Coutinho . I am a undergraduated  Oceanography
student , at UFBA(Federal University of the state of  Bahia ,)in Brazil,
and recently started studying coral reefs .
For my first research , i need some long-term and low-cost solution for
measurement of  hydrodynamics in the coral reef .By now , i have not found
anything yet . Are there any technique or equipment for that?

Sincerely,
João Pedro Coutinho
jdebritocoutinhoferreira at gmail.com