When three times the number of dolphins in the ocean joins in from a river, the number of dolphins in the ocean increases by 3 *65 = <<3*65=195>>195

The total number of dolphins in the ocean increases to 195+65 = <<195+65=260>>260

# Answer

260
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
If there are sixty-five dolphins in the ocean, and three times that number joins in from a river which has its mouth at the ocean, calculate the total number of dolphins in the ocean.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
260
If there are sixty-five dolphins in the ocean, and three times that number joins in from a river which has its mouth at the ocean, calculate the total number of dolphins in the ocean.
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