VIDEO UPDATE: Dolphins spotted in river at Mullum
UPDATE, 3,30pm: A wetlands expert says dolphins swimming in the Brunswick River at Mullumbimby is not unusual, although it only happens at certain times of year.
Wetlands Australia regional manager Cassie Price said while the phenomenon wasn't unheard of, it usually only happened in dry conditions but was also welcome sign of the river system's health.
Mullumbimby is only about 11km upstream from Brunswick Head, and dolphins have also been seen in the Clarence River at Grafton, which is 59km upstream from its mouth at Yamba.
Ms Price said the dolphins were quite comfortable moving upstream while the water was brackish, or a mixture of fresh and salty.
"It's been fairly dry (as) we haven't had our big February or January rainfall yet," she said.
"With the dry conditions the saltwater will be pushing a lot further up into the river systems at the moment.
She said the barrier between the salt and fresh water was in fact an attractive location for feeding due to the amount of debris generally in the zone - for dolphins and other large predators.
"It's actually a really good sign too, it means there's a lot of feed for them in the river."
Ms Price said on the whole the Brunswick River was in better condition that the Richmond River, with things like oysters growing naturally a healthy sign and the commercial oyster industry in a far more viable condition than Ballina.
"It's probably not as good as it was... I won't say there hasn't been decline in quality over the years, but compared to the Richmond it's good."
ORIGINAL STORY: WHO would have thought it - dolphin spotting in Mullumbimby?
Yesterday Lee Gleeson posted these photos in the Facebook group Mullumbytes, which he said he took from near the boat ramp close by Federation Bridge in Mullum.
The pictures allegedly show a couple of dolphins swimming in the Brunswick River.
What do you think?
Have you ever spotted dolphins in Mullumbimby before?