A man has admitted to running down a black swan in his jet boat on Tauranga Harbour.

Katikati man Carl Williams, 36, pleaded guilty to two charges under the Animal Welfare Act in the Tauranga District Court today, reported SunLive.

The incident, caught on camera on Boxing Day last year, showed him running down black swans in an aluminium jet boat.

In footage given to Tauranga SPCA, one of seven black swans was seen struggling in the wake of the boat after disappearing under the bow.

The other six were chased by the boat, and were distressed as they tried to get away from the threat, said Crown prosecutor Hayley Sheridan.

Williams and another man faced an additional charge from 2011, relating to an alleged shooting of a goat after it was thrown into the air, said SunLive.

Williams was charged with encouraging and filming the incident, and his co-accused Stephen Bowman was charged with the shooting.

Both have entered not guilty pleas to the charges and remanded on bail until October 8.

Williams would be sentenced for the swan charges on October 3.