Dive report: Schooner Bay

Aug 12, 2023
One hour after high tide
Visibility around 8m
Sunny, no wind, waves or current
Freediving 8m max, mostly 3-5m
One hour swim

I walked the bay at low tide then entered the water when the sun came out. I swam straight out from the end of the road (SW) then headed east towards the rocks. I explored the intersection between the rock and sand substrate for 200-300 meters then headed towards the shore and looped back in shallower water.

Exotic Calupera covered most rocks but was in the early stages and was not thick like in Okupu Bay where it has been established longer. I didn't see any bare patches of rocks here where matts of exotic Calupera have been dislodged creating large holes in the biogenic blanket. I also did not see any Unwanted Organisms in either bay (Other than exotic Calupera). There were still many rocks with no exotic Calupera, these were covered in diverse native algae, mostly Coraline turf. Exotic Calupera was expanding into the kina barrens and smothering the shorter native algae, however most rocks were covered in Ecklonia and the tall brown kelps looked unaffected by exotic Calupera (once at full size). Exotic Calupera was under the Ecklonia canopy but limited to rocks, it was not really encroaching onto the sand here.

A few sponges were being smothered by the exotic Calupera but the main habitat being smothered was Coraline turf.

The water was full of salps, mostly broken up but a few chains. Fish seen: Schools of spotty. A few parore, small red moki, banded wrase, violet sweep and triplefins. Just one young sand daggers wrasse, a leather jacket and a small snapper.

Posted on August 13, 2023 06:22 AM by shaun-lee shaun-lee

Observations

Photos / Sounds

What

Lion's Mane Jellies (Genus Cyanea)

Observer

shaun-lee

Date

August 12, 2023 10:30 AM NZST

Photos / Sounds

What

Cart-Rut Shell (Dicathais orbita)

Observer

shaun-lee

Date

August 12, 2023 10:22 AM NZST

Photos / Sounds

Observer

shaun-lee

Date

August 12, 2023 09:48 AM NZST

Description

Many

Photos / Sounds

Observer

shaun-lee

Date

August 12, 2023 09:33 AM NZST

Description

Patches

Photos / Sounds

What

Waratah Anemone (Actinia tenebrosa)

Observer

shaun-lee

Date

August 12, 2023 09:35 AM NZST

Photos / Sounds

What

Porcupine Fish (Allomycterus pilatus)

Observer

shaun-lee

Date

August 12, 2023 09:02 AM NZST

Photos / Sounds

What

Coralline Algae (Family Corallinaceae)

Observer

shaun-lee

Date

August 12, 2023 10:49 AM NZST

Description

These two photos only a few meters apart show the transition as exotic Calupera moves in. Here the Calupera is deeper.

Photos / Sounds

What

Spotty (Notolabrus celidotus)

Observer

shaun-lee

Date

August 12, 2023 11:02 AM NZST

Description

Abundant

Photos / Sounds

Observer

shaun-lee

Date

August 12, 2023 10:59 AM NZST

Photos / Sounds

What

Fern Caulerpa (Caulerpa flexilis)

Observer

shaun-lee

Date

August 12, 2023 11:05 AM NZST

Photos / Sounds

Observer

shaun-lee

Date

August 12, 2023 11:08 AM NZST

Description

Showing how it establishes on rock substrate preferably to sand

Photos / Sounds

What

Salps (Family Salpidae)

Observer

shaun-lee

Date

August 12, 2023 11:09 AM NZST

Photos / Sounds

What

Grey Massive Sponge (Ecionemia alata)

Observer

shaun-lee

Date

August 12, 2023 11:12 AM NZST

Photos / Sounds

Observer

shaun-lee

Date

August 12, 2023 11:14 AM NZST

Photos / Sounds

What

Common Kelp (Ecklonia radiata)

Observer

shaun-lee

Date

August 12, 2023 11:16 AM NZST

Description

Showing exotic Caulerpa growing under the Ecklonia canopy

Photos / Sounds

What

Kina (Evechinus chloroticus)

Observer

shaun-lee

Date

August 12, 2023 11:22 AM NZST

Description

Barren with encroaching exotic Caulerpa

Photos / Sounds

What

Purple Wrasse (Notolabrus fucicola)

Observer

shaun-lee

Date

August 12, 2023 11:22 AM NZST

Description

Two seen

Photos / Sounds

Observer

shaun-lee

Date

August 12, 2023 11:29 AM NZST

Photos / Sounds

Observer

shaun-lee

Date

August 12, 2023 11:27 AM NZST

Description

More developed matts

Photos / Sounds

Observer

shaun-lee

Date

August 12, 2023 11:29 AM NZST

Photos / Sounds

What

Kina (Evechinus chloroticus)

Observer

shaun-lee

Date

August 12, 2023 11:30 AM NZST

Description

Using Caulerpa brachypus as camouflage

Photos / Sounds

What

Red Algae (Phylum Rhodophyta)

Observer

shaun-lee

Date

August 12, 2023 11:31 AM NZST

Description

Just recording a diversity of algae here

Photos / Sounds

Observer

shaun-lee

Date

August 12, 2023 11:34 AM NZST

Description

More photos showing how the exotic Caulpera is smothering Coraline Turf

Photos / Sounds

What

Variable Oystercatcher (Haematopus unicolor)

Observer

shaun-lee

Date

August 12, 2023 10:44 AM NZST

Description

One pair feeding on the rocks at low tide

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