About the Authors

Timothy J. Crone

To whom correspondence should be addressed. E-mail: tjc@ocean.washington.edu

William S.D. Wilcock
Andrew H. Barclay
Jeffrey D. Parsons

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TC WW AB. Performed the experiments: TC. Analyzed the data: TC. Contributed reagents/materials/analysis tools: TC JP. Wrote the paper: TC.