What Critter Is It?

Fish are sometimes stranded alive in pools on outgoing tides, but usually they are dead, and a rare feast for seabirds. You might occasionally also find freshwater species on metropolitan beaches following rains that have washed fish, such as European carp, out of the Torrens.

Porcupine fish

Porcupine fish (a.k.a. balloon fish, puffer fish) Diodon sp

Best not to step on a dead, dried porcupine fish! It has nasty, long sharp spines. In a live fish the spines provide defence against predators, as does its ability to inflate its body, making the spines stick out – like an echidna in defensive mode. These fish are not built for speed.

 

 

 

Toad Fish Tetractenos

Toadfish – don’t eat!

These fish grow to about 15 cm (this one was about full size) and are common in shallow water in southern Australia. Like other members of this family, toadies are poisonous.

 

 

 

 

 

Short-headed Lamprey (a.k.a. Australian Lamprey) Mordacia mordax

Lamprey

Looking like an eel, these fish grow to about 50cm in length and move from marine to fresh water to breed. In the sea they parasitise other fish. Most fish have jaws, but Lampreys are blood sucking and have a round funnel-like mouth with many small sharp teeth.

All crabs belong to the group called the Decapoda – Latin for ‘ten legs’.

There are lots of crab species in the Gulf, and they range in size from tiny to quite large. Most have hard shell (carapace) unless they are moulting. This happens as the crab is growing. Calcium is reabsorbed from the old shell, which gradually becomes softer, and is used to grow its next shell. When the new shell is ready the old shell is cast off, and the new shell hardens quickly. Sometimes the soft, old shell is washed up. Hermit crabs don’t have a hard carapace, and they use empty marine snail shells to protect their soft bodies. As they grow they need to find larger snail shells. If you are collecting shells on the beach, be sure to check that there is not a hermit crab in residence!

The Blue Swimmer is probably the best known crab, and is sought after because it is abundant and tasty! If you see one in the water while you are swimming, or in a tidal pool, don’t get too close – a nip from their claws is painful.

Sand crab carapace – note the two dark red sots

Sand crabs are pale reddish with two darker spots on the carapace.

 

 

 

 

 

 

 

 

 

Spider crabs range greatly in size, but characteristically have really long legs.

Spider crab near Henley Jetty – approx 20 cm across the carapace

 

 

 

 

 

 

 

 

 

 

Tiny spider crab – approx 1 cm across the carapace

 

 

 

 

 

 

 

 

 

 

 

Rock crabs are smaller and chunkier than the swimmers and spider crabs, but are really good at wedging themselves under rocks and in cracks.

 Continuing on with our chat with Featured speaker Sarah-Jo Lobwein and the work she does in regards to single use plastics #swapforthesea 2. Plastics - what can’t you avoid or still struggle with finding an alternative? . “Dried Dog food that’s not overly expensive (but recently found a brand that is meant to be home compostable packaging but will have to see if it passes my dog’s taste test!), potato and corn crisps (there seems to be alternative to all other snack packaging except for these) and CDs – I have always loved the joy of purchasing a new music CD and most come in plastic hard or paperboard plastic covered. Those three all have alternatives, but they are my naughty weaknesses. . The main struggle for me, as a someone who is gluten AND lactose intolerant AND travels to remote places, is sometimes I have to eat a lot of rice or just accept the plastic until I find a way to get the venue or place to change. Usually I take my own packaging with me and then bring it home to recycle, for example when I am home my bread comes in paper or reusable bags, but travelling I will take with me gluten free bread in plastic sealed bags.” . Plastic Free July example of a ready to go reusable kit you can have waiting by the door as you head out. . . . . . . . . #waronwaste #waste #saynotoplastics #refuse #recycle #reuse #repurpose #upcycle #protectourgulf #saveouroceans #gogreen #nature #conservation #climateaction #marinedebris #beachcleanup #bethechange #adelaide #fogsv #friendsofgulfstvincent
 Continuing on with our chat with Featured speaker Sarah-Jo Lobwein and the work she does in regards to single use plastics #swapforthesea . 1. Plastics - what have become your favourite swap items? . “There are technological advancements and inventions, (or rediscoveries of what society used before we became addicted to plastic), all the time that amaze me – straws made out of wheat for example, and consumable soft bio plastic packaging of pasta made out of algae that we can just throw into boiling water etc. . But my favourites are the every day items – reusable, take your own or compostable straws, cutlery, takeaway containers, coffee cups, water bottles, shopping bags, paper bin bags and produce bags because they are so easy and accessible –humans were using them before plastic was invented or became prolific. The ones that reduce waste in general such reusable or not using an item at all is the best solution (such as not using a straw), and then compostable such as paper or bamboo. . Personally I can’t believe how empty my bins are once I phased out most plastics – I use the paper sandwich/ mushroom veggie bags or paper retail shopping bags for my bin and wash out the bin if it gets dirty (and there are businesses now that can come clean your bins!) - there is always an alternative.” . . . . . . . . #waronwaste #waste #saynotoplastics #refuse #recycle #reuse #repurpose #upcycle #protectourgulf #saveouroceans #gogreen #nature #conservation #climateaction #marinedebris #beachcleanup #bethechange #adelaide #fogsv #friendsofgulfstvincent

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