Swan River WA - Marine Zone

I always thought that at the mouth of the river where it meets the ocean was where the fresh and salt water mixed and up the river was all fresh, but no. 20kms inland from the mouth of the Swan river it is still salt. Also in this 20km stretch of river is more marine life that what I have seen on the ocean beaches around the Swan river mouth and Perth area.

It is amazing to realise how diverse the marine life is in a river and that there is a marine zone that stretches up into the river. After about 25 - 30kms it does change to a fresh water zone and the water is muddy with zero visability.

So now I have some places to beach comb and play, without having to contend with pounding surf and hardly any beach drift.

Posted by tangatawhenua tangatawhenua, April 11, 2018 03:01

Observations

Photos / Sounds

What

Australian Blue Swimmer Crab Portunus armatus

Observer

tangatawhenua

Date

April 6, 2018 05:17 PM NZST

Description

Lurking at the bottom of the river.

Photos / Sounds

Square

What

Sponges Phylum Porifera

Observer

tangatawhenua

Date

April 6, 2018 05:30 PM NZST

Description

Under a rock

Photos / Sounds

What

Rock Flathead Platycephalus laevigatus

Observer

tangatawhenua

Date

April 6, 2018 05:31 PM NZST

Description

I have never seen anything like this in the water. Looked like a baby croc but as I got closer it then looked like a lizard. Only managed to get these 2 photos then when I went to get a side shot it took off.

Lurking on the bottom of the river

Photos / Sounds

Observer

tangatawhenua

Date

April 6, 2018 05:32 PM NZST

Description

First time I have seen colourful tubes :) Under a rock

Photos / Sounds

What

Puff-ball Algae Genus Colpomenia

Observer

tangatawhenua

Date

April 6, 2018 05:41 PM NZST

Description

growing on rubble

Photos / Sounds

What

Pleated Sea Squirt Styela plicata

Observer

tangatawhenua

Date

April 6, 2018 05:53 PM NZST

Photos / Sounds

What

Feather Duster Worms Family Sabellidae

Observer

tangatawhenua

Date

April 6, 2018 05:55 PM NZST

Description

Under a rock

Photos / Sounds

Square

Observer

tangatawhenua

Date

April 6, 2018 05:56 PM NZST

Description

Under a rock

Comments

Thumb

Wow. I had no idea.

Posted by leonperrie over 1 year ago (Flag)

Add a Comment

Sign In or Sign Up to add comments

Is this inappropriate, spam, or offensive? Add a Flag