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.n internâs salary varies based on his or her age as the one in 20s earns up to Â£16,641, in 30s earns about Â£21,745, in 40s and in 50s earns about Â£25,739 per annum. In addition, the highest paid intern earns an yearly salary of around Â£31,787 whereas the lowest paid intern earns less than Â£21,000 per year.