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| þ                                                         | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934  |
|---------------------------------------------------------------------|------------------------------------------------------------------------------------------|
|                                                                |                                                                                     |
| For the quarterly period ended March 31, 2011                       |
|                                                                |                                                                                     |
| OR                                                                  |
|                                                                |                                                                                     |
| o                                                                   | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |
|                                                                |                                                                                     |
| For the transition period from ________________ to ________________ |

|  Ecosphere Technologies, Inc.                           |
|--------------------------------------------------------------|
|  (Exact name of registrant as specified in its charter) |

| Delaware                                                     |   | 20-350286                |
|--------------------------------------------------------------|--------|--------------------------|
| (State or other jurisdiction of          |   | (I.R.S. Employer    |
| incorporation or organization)                     |   | Identification No.) |
|                                                         |   |                     |
| 3515 S.E. Lionel Terrace, Stuart, Florida                    |   | 34997                    |
| (Address of principal executive offices) |   | (Zip Code)          |

| Large accelerated filer                       | o      |   | Accelerated filer                         | þ |
|-----------------------------------------------|--------|--------|-----------------------------------------------------|--------|
|                                          |   |   |                                                |   |
| Non-accelerated filer     | o      |   | Smaller reporting company                 | o      |
|                                          |   |   |  (Do not check if a smaller reporting company) |   |

| Class                                   |   | Outstanding at May 6, 2011 |
|-----------------------------------------|--------|----------------------------|
| Common Stock, $0.01 par value per share |   | 142,421,093 shares         |

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| Exhibit |   |                                                                                            |   | Incorporated by Reference |   | Filed or Furnished  |
|---------|--------|-------------------------------------------------------------------------------------------------|--------|---------------------------|--------|---------------------|
| No.     |   | Exhibit Description                                                                             |   | Form                      |   | Date                |   | Number |   | Herewith |
|    |   |                                                                                            |   |                      |   |                |   |   |   |   |
| 3.1     |   | Certificate of Incorporation                                                                    |   | 10-QSB                    |   | 12/11/06            |   | 3.1 |   |   |
| 3.2     |   | Certificate of Amendment                                                                        |   | 10-K                      |   | 3/25/09             |   | 3.2 |   |   |
| 3.3     |   | Certificate of Correction                                                                       |   | 10-K                      |   | 3/25/09             |   | 3.3 |   |   |
| 3.4     |   | Bylaws                                                                                          |   | 10-QSB                    |   | 12/11/06            |   | 3.2 |   |   |
| 3.5     |   | Amendment to the Bylaws adopted June 17, 2008                                                   |   | 10-Q                      |   | 11/13/08            |   | 3.3 |   |   |
| 3.6     |   | Amendment to the Bylaws adopted August 12, 2010                                                 |   | 10-Q                      |   |  8/16/10       |   | 3.6 |   |   |
| 4.1     |   | Amended and Restated 2006 Equity Incentive Plan                                                 |   | 10-Q                      |   |   8/16/10 |   | 10.1 |   |   |
| 4.2     |   | Amendment to the Amended and Restated 2006 Equity Incentive Plan                                |   | S-8                       |   | 3/25/11             |   | 4.2 |   |   |
| 10.1    |   | Summary of Employment Arrangement - Vinick*                                                     |   | 10-Q                 |   |   5/10/11      |   | 10.1 |   |   |
| 10. 2   |   | Summary of Employment Arrangement - McGuire*                                                    |   | 10-K                      |   | 3/16/11             |   | 10.2 |   |   |
| 10.3    |   | Hydrozonix Exclusive Product Purchase and Sublicense Agreement**                                |   |                      |   |                |   |   |   | Filed** |
| 10.4    |   | Southwestern Energy Services Agreement**                                                        |   | 10-Q                      |   | 8/16/10             |   | 10.16 |   |   |
| 10.5    |   | Newfield Exploration Services Agreement**                                                       |   | 10-Q                      |   | 8/16/10             |   | 10.17 |   |   |
| 10.6    |   | EES Side Letter Agreement - Hydrozonix**                                                        |   | 10-Q                      |   | 5/10/11             |   | 10.6 |   |   |
| 10.7    |   | Second Amendment to EES LLC Agreement                                                           |   |                      |   |                |   |   |   | Filed |
| 31.1    |   | Certification of Principal Executive Officer (Section 302)                                 |   |                      |   |                |   |   |   | Filed |
| 31.2    |   | Certification of Principal Financial Officer (Section 302)                                 |   |                      |   |                |   |   |   | Filed |
| 32.1    |   | Certification of Principal Executive Officer and Principal Financial Officer (Section 906) |   |                      |   |                |   |   |   | Furnished |

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|             |         | ECOSPHERE TECHNOLOGIES, INC.  |   |
|------------------|--------------|-------------------------------|--------|
|             |         |                          |   |
| December 1, 2011 |    | /s/ Charles Vinick       |   |
|             |         | Charles Vinick                |   |
|             |         | Chief Executive Officer       |   |
|             |         | (Principal Executive Officer) |   |
|             |         |                          |   |
| December 1, 2011 |         | /s/ Adrian Goldfarb      |   |
|             |         | Adrian Goldfarb               |   |
|             |         | Chief Financial Officer       |   |
|             |         | (Principal Financial Officer) |   |