Hi, i like to free dive to a maximum of 10meters with mask and snorkal , but could someone tell me of any dangers,eg sea snakes, sharks,or anything toxic i might stay away from, i wear lightwight plastic swim shoes , bought in egypt, is there anything that could harm me, as i dont have any protection,wetsuit,speergun,i dont want to hert any wildlife just be safe, ive free dived in egypt with no fear can i expect the same at puerto plata ?