What passes for a starfish's circulatory system uses ocean water instead of blood. This is essentially a series of tubes that extend from the stomach to the arms to transport nutrients. A starfish doesn't have a heart, but water running through the arms and feet provides oxygen.
The average internist has a salary of $186,850 a year ($89.83 an hour). An entry level internist can expect to earn $60,870 a year ($29.26 an hour) while an experienced internist has an average annual salary of greater than $187,200 a year (greater than $90.00 an hour).n entry level internist can expect to earn $60,870 a year ($29.26 an hour) while an experienced internist has an average annual salary of greater than $187,200 a year (greater than $90.00 an hour).
Average internship salary and hourly wage. An average hourly wage for an intern in the United States ranges from between $13.00 to $15.00 per hour. The average salary for a medical intern typically ranges from between $41,000 to $53,000 per annum.owever, an average yearly salary for an intern depends on the number of working hours. An average base salary for an intern working for about 50 hours per week usually ranges from between $39,500 and $48,000.