Exhibit 8.1
 
                                 Form of Opinion
                                 ---------------
                                  May 12, 1998

EarthLink Network, Inc.
3100 New York Drive
Pasadena, California  91107
 
                               Strategic Alliance
                        between EarthLink Network, Inc.,
                             Sprint Corporation, and
                       Sprint Communications Company L.P.
                       Certain Federal Income Tax Matters

Ladies and Gentlemen:

     We have acted as counsel to EarthLink Network, Inc. ("EarthLink"), a 
Delaware corporation, in connection with the strategic alliance by and among 
EarthLink, Sprint Corporation ("Sprint"), a Kansas corporation, and Sprint 
Communications Company L.P. ("Sprint L.P."), a Delaware limited partnership. 
The strategic alliance provides for (a) the merger (the "Merger") of Dolphin 
Sub, Inc. ("Newco Sub"), a Delaware corporation, into EarthLink and a 
resulting exchange of each share of EarthLink common stock into one share of 
the common stock of Dolphin, Inc. ("Newco"), a Delaware corporation, (b) the 
issuance by Newco of convertible preferred stock to Sprint L.P., (c) the 
issuance of convertible notes to Sprint, and (d) amendments to agreements 
governing options, warrants and rights to acquire EarthLink common stock.

     By means of an offer to purchase (the "Offer") and a related letter of 
transmittal dated February 18, 1998, Sprint has offered to purchase from 
EarthLink stockholders 1,250,000 shares of EarthLink common stock at $45 per 
share. Upon consummation of the Offer, Sprint will own approximately 11.1% of 
the total number of issued and outstanding shares of EarthLink common stock. 
The Offer is contingent upon there being validly tendered and not withdrawn 
prior to the expiration date at least 1,250,000 shares of EarthLink stock and 
the satisfaction or waiver of the conditions to the obligations of Sprint, 
Sprint L.P., Newco, Newco Sub and EarthLink as provided by an investment 
agreement (the "Investment Agreement") between the parties. The Investment 
Agreement provides, among other things, that subject to the terms and 
conditions set forth therein, immediately following consummation of the 
Offer, (i) the Merger will be effected; (ii) Sprint L.P. will acquire Newco 
convertible preferred stock and (iii) Sprint will provide Newco and 
EarthLink, as co-borrowers, with convertible senior debt financing, such 
indebtedness to be evidenced by one or more Newco convertible senior 
promissory notes.

     Immediately following the consummation of the Offer, EarthLink, Newco 
and Newco Sub will effect the Merger whereby Newco Sub, a wholly-owned 
subsidiary of Newco, will merge with and into EarthLink. All of the then 
issued and outstanding shares of EarthLink common stock will be converted 
into an equal number of shares of Newco common stock. Upon consummation of 
the merger, EarthLink will be a wholly-owned subsidiary of Newco.

     Concurrently with the Merger, Sprint L.P. will receive 4,102,941 shares 
of Newco convertible preferred stock in exchange for $23,750,000 of cash, the 
contribution to Newco of



EarthLink Network, Inc.
May 12, 1998
Page 2

the Sprint Internet Passport-SM- Subscribers and the consummation of a network 
agreement between Sprint L.P., Newco, and EarthLink. The convertible 
preferred stock will be initially convertible into 3,533,411 shares of Newco 
common stock at the time of closing.

     On or after the closing date Sprint will provide Newco and EarthLink, as 
co-borrowers, with up to $25 million of convertible senior debt financing 
with such amount to increase by $25 million on each of the first, second and 
third anniversaries of the closing date for a total of $100 million of such 
financing. This indebtedness is to be evidenced by one or more Newco 
convertible senior promissory notes.

     We have reviewed the Agreement and Plan of Merger among EarthLink, 
Newco, and Newco Sub, the Investment Agreement, the Registration Statement on 
Form S-4 under the Securities Act of 1933 relating to the Strategic Alliance 
(the "Registration Statement"), and such other documents as we have 
considered necessary in giving our opinion. In addition, we have assumed the 
following:

     1.  The fair market value of the Newco common stock received by each 
EarthLink stockholder in the Merger will be approximately equal to the fair 
market value of the EarthLink stock surrendered in the Merger.

     2.  Following the Merger, EarthLink will hold (a) at least 90 percent of 
the fair market value of the net assets and at least 70 percent of the fair 
market value of the gross assets held by EarthLink immediately before the 
Merger and (b) at least 90 percent of the fair market value of the net assets 
and at least 70 percent of the fair market value of the gross assets held by 
Newco Sub immediately before the Merger. For purposes of this assumption, 
amounts paid by EarthLink or Newco Sub to stockholders who receive cash for 
EarthLink common stock, amounts used by EarthLink or Newco Sub to pay 
reorganization expenses, and all redemptions and distributions (except for 
regular, normal dividends) made by EarthLink will be included as assets of 
EarthLink or Newco Sub, respectively, immediately before the Merger, but 
amounts transferred to Newco Sub by Newco in connection with the Merger will 
not be taken into account.

     3.  EarthLink has no plan or intention to issue additional shares of its 
stock that would result in Newco owning less than 80 percent of the total 
combined voting power of all classes of EarthLink's voting stock or less than 
80 percent of each class of EarthLink's nonvoting stock.

     4.  Newco has no plan or intention to reacquire any of its stock issued 
in the Merger or to make any extraordinary distribution with respect to such 
stock.

     5.  Newco has no plan or intention to liquidate EarthLink, to merge 
EarthLink with or into another entity, to sell or otherwise dispose of the 
stock of EarthLink, or to cause EarthLink to sell or otherwise dispose of any 
of its assets or of any of the assets acquired from Newco Sub, except for 
dispositions made in the ordinary course of business.

     6.  The liabilities of Newco Sub to be assumed by EarthLink, if any, and 
the liabilities to which the transferred assets of Newco Sub are subject, if 
any, were incurred by Newco Sub in the ordinary course of business.



EarthLink Network, Inc.
May 12, 1998
Page 3

     7.  Following the Merger, EarthLink will continue its historic business 
or use a significant portion of its historic business assets in a business.

     8.  Newco, Newco Sub, EarthLink, and the stockholders of each will pay 
their respective expenses, if any, incurred in connection with the Merger.

     9.  There is no intercorporate indebtedness existing between (a) Newco 
or Newco Sub and (b) EarthLink or any subsidiary of EarthLink.

     10. Neither Newco nor Newco Sub owns, nor will it acquire in 
anticipation of the Merger, any shares of EarthLink stock.

     11. Neither Newco, Newco Sub, nor EarthLink is a regulated investment 
company, a real estate investment trust, or a corporation 50 percent or more 
of the value of whose total assets are stock and securities and 80 percent or 
more of the value of whose total assets are assets held for investment. For 
purposes of making the foregoing 50-percent and 80-percent determinations, 
stock and securities in any subsidiary corporation shall be disregarded, and 
the parent corporation shall be deemed to own its ratable share of the 
subsidiary's assets.

     12. On the date of the Merger, the fair market value of the assets of 
EarthLink will exceed the sum of its liabilities plus the amount of the 
liabilities to which its assets are subject.

     13. No stock or securities will be issued for services rendered to or 
for the benefit of Newco in connection with the transfer to Newco of (a) the 
EarthLink stock by the EarthLink stockholders and (b) the cash and other 
property by Sprint L.P.

     14. The transfer to Newco of (a) the EarthLink stock by the EarthLink 
stockholders and (b) the cash and other property by Sprint L.P. does not 
involve a transfer to Newco of any receivables or an assumption by Newco of 
any payables.

     15. The transfer to Newco of (a) the EarthLink stock by the EarthLink 
stockholders and (b) the cash and other property by Sprint L.P. is not the 
result of solicitation by a promoter, broker or investment house.

     16. The EarthLink stockholders and Sprint L.P. will not retain any 
rights in the EarthLink stock transferred to Newco.

     17. Taking into account any issuance of additional shares of Newco 
stock; any issuance of stock for services; the exercise of any Newco stock 
rights, warrants, or subscriptions; a public offering of Newco stock; and the 
sale, exchange, transfer by gift, or other disposition of any Newco stock to 
be received in the exchange, the EarthLink stockholders and Sprint L.P. will 
in the aggregate own 80 percent or more of the total combined voting power of 
all classes of Newco's voting stock and 80 percent or more of each class of 
Newco's nonvoting stock.

     18. Newco will not be an investment company within the meaning of 
Section 351(e)(1) of the Code and Section 1.351-1(c)(1)(ii) of the Treasury 
Regulations.



EarthLink Network, Inc.
May 12, 1998
Page 4

     On the basis of the foregoing and assuming that (a) the Merger will be 
consummated in accordance with the Agreement and Plan of Merger, (b) the 
issuance of the convertible preferred stock and convertible senior promissory 
notes will be consummated according to the Investment Agreement and (c) with 
respect to stockholders who are nonresident aliens or foreign entities, 
EarthLink will comply with all applicable statement and notification 
requirements, if any, of Treasury Regulation Sections 1.897-2(g)&(h), we are 
of the opinion that, under existing law, for federal income tax purposes:

     1.   The Merger will be a "reorganization" within the meaning of
          Section 368(a)(2)(E) of the Code and/or an exchange of
          property by holders of EarthLink common stock described in
          Section 351 of the Code.

     2.   An EarthLink stockholder will not recognize gain or loss on
          the exchange of EarthLink common stock solely for shares of
          Newco common stock in the Merger.

     3.   The basis of the shares of Newco common stock received by an
          EarthLink stockholder in the Merger will be the same as the
          basis of the shares of the EarthLink common stock exchanged
          therefor.

     4.   The holding period for the shares of Newco common stock
          received by an EarthLink stockholder in the Merger will
          include the holding period for the shares of the EarthLink
          common stock exchanged therefor, if such shares of EarthLink
          common stock are held as a capital asset at the effective time
          of the Merger.

     5.   Neither Newco nor Newco Sub will recognize gain or loss on the
          issuance of Newco common stock, the acquisition of EarthLink
          common stock, or the transfer of Newco Sub's assets to
          EarthLink in the Merger.

     6.   EarthLink will not recognize gain or loss (a) on the
          acquisition of the assets of Newco Sub in the Merger or (b) on
          the constructive distribution, if any, of Newco common stock
          to EarthLink stockholders.

     We are also of the opinion that the material federal income tax 
consequences of the Merger are fairly summarized in the Registration 
Statement under the heading "Certain Federal Income Tax Consequences." We 
consent to the filing of this opinion as an exhibit to the Registration 
Statement. In giving this consent, we do not admit that we are within the 
category of persons whose consent is required by section 7 of the Securities 
Act of 1933 or the rules and regulations promulgated thereunder by the 
Securities and Exchange Commission.

                                  Very truly yours,

                                  /s/ Hunton & Williams