Marine Invertebrates,

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Picture copyright belongs to the photographer mentioned by each picture
Anemone Crayfish Lobster Sea Pen Starfish
Barnacle Cuttlefish Nudibranc Sea Cucumber Zooplankton
Clams Feather Duster Octopus Sea Snakes
Conch Flatworms Prawns Sea Urchin
Coral Jelly Fish Plankton Sponges
Crabs Jewel Anemones Rays Squid Unknown

Please note that we are not marine biologists so please inform us about our errors ~ thank you.


Anemone:   

The anemone 'stings' fish that touch its arms and they are stunned. The arms slowly pull fish and scraps of food into its centre and then ingests it by turning its stomach inside out and enveloping the food. They hold themselves to rock and within crevices by a strong foot. Sea anemones continuously secrete a thin layer of slime over the column behind their arms.

Anemones get their colour from the algae within it. Clown fish develop an immunity to the stings and are able to hide within the tentacles untroubled by the stings. They then protect the anemone from predators and the anemone benefits from any scraps of food the clown fish misses. They are able to regenerate if damaged.

Order- Actiniaria.   Can you identify the types shown below or Unknown?

 

 
Picture by Caver Colin, Dogsbreath Diver in Jordan
 
 
Pictures by Tam Boyd on the wreck of the Fairweather 5 in Scotland

Clown within a purple anemone. There's a brain coral on the right.
Picture by Caver Colin, Dogsbreath Diver in Jordan


Plumose anemones by Tam Boyd on the wreck of the Fairweather 5 in Scotland.
what type is this one? - anemone 2
Clown3.jpg (566803 bytes)
or Anemone 3 -
  anemone.jpg (49431 bytes)  
Picture by PagoPago Divers Samoa
or anemone 4:
clowninpurple-greenanemone.jpg (189627 bytes)

Picture by www.prodivebali.com in Bali, Indonesia.

Barnacle


Picture by  www.chaloklum-diving.com in Thailand.

   

Coral: Coral is an animal.  Corals are normally divided into hard corals or soft corals. It is their skeletons which make the reef. A single coral is called a polyp of a few millimetres and each produces its own external skeleton. They usually group together and form the coral we see. As they grow their old skeletons build the reef.  

Hard corals
 


Picture by Graeme Hart and courtesy of RandSea Divers Co Ltd, Tobago Web.

 
 
A field of branching coral in Aqaba, Jordan.
Picture by Caver Colin, Dogsbreath diver.
CoralBrainCaymans.jpg (81200 bytes)
Brain coral in the Caymans
Picture by Mark Walton Dogsbreath diver.
Species: Diploria Each polyp can be 6mm in diameter.
Plate coral in Oman:
  DamselSgtMjr.jpg (36993 bytes)  
By Big Colin, Dogsbreath Diver

Butterfly and coral in Jordan
Picture by Caver Colin, Dogsbreath diver.
Black coral
Black coral. Picture by Mojo of HellfishDivers  in St Kitts

in Aqaba, Jordan.
Picture by Caver Colin, Dogsbreath diver.
 
Branching coral.
Picture by Justin, Dogsbreath diver in the Maldives, Oct 03

Branching coral.
Picture by Justin, Dogsbreath diver in the Maldives, Oct 03

Pillar coral. Picture by Dive-jamaica.com

Sea fan in the Caymans.
Picture Tolgus BS-AC

Elkhorn in the Caymans
Picture Tolgus BS-AC

AmalauCove.jpg (42020 bytes) 
Amalau Cove Picture by PagoPago Divers Samoa

Branching coral 

 
Jordan, Picture by Caver Colin, Dogsbreath Diver

Almost all pictures are thumbnails - so click them to expand.

TableCoral1.jpg (848406 bytes)

Table coral in the Red Sea 2002,
Pictures by Big Col, our Chairman

TableCoral2.jpg (865518 bytes)

Table coral in the Red Sea 2002,
Pictures by Big Col, our Chairman

BrainCoral.jpg (567973 bytes)

Picture by Anorak, DBDiver in Egypt, 2002 Brain coral in the Red Sea.


Soft corals

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Please add links to us too ~ thank you.


There's a small Gorgonian extending its tentacles just below the butterfly fish

Picture by Caver Colin, Dogsbreath Diver

The soft coral is growing out of the wall

We don't know which type these are: wwwsubwayscubacom3.jpg (18076 bytes)

Picture by www.subwayscuba.com 


Picture by  www.oceanquestdivecenter.com in Florida, USA

gorgonian coral
Gorgonian extended.

Picture by http://photos.yahoo.com/magicpudding  in the Philippines


Giant Clam (Fiasua)

img_0331.jpg (2547485 bytes)
Clam. Picture by Trent Bowen Dogsbreath diver

FiasuaGiantClam.jpg (59401 bytes)
Picture by PagoPago Divers Samoa

Clam.jpg (685289 bytes)

Picture by Anorak, DBDiver in Egypt, 2002

 

clam by Mark Walton, dogsbreathdiver in Thailand
Clam by Mark Walton, Dogsbreath diver in Thailand 2008

 

Conch


Picture by www.oceanquestdivecenter.com Florida, USA

   
Crabs:       Fiddler : HermitSoldier  :  Ghost : Christmas Island Crabs

Crabs have 8 legs, but you can only see 6 of them for hermit crabs as two of them are inside, holding the shell on. Some breath through gills, others can breath on land.

south_east_asia_8.jpg (63486 bytes)
We think this is a crab! Picture by dave4scuba@hotmailcom  

   
Fiddler Crabs

The male crab has one claw larger than the other which can weigh half as much as the whole body. They filter organic mater  out of the sand and mud. They hide from the sun in tunnel 10 times longer than they are. A very small pool of water  at the bottom allows them to breath through their gills. They have 360 degrees of vision as their eyes of 9000 separate lenses are on long stalks.  They have long sight, so they have to calculate their way back to their burrow. They can survive up to 8 hours on a baking mud flat even breathing through their gills.

 

Hermit crabs will use shells of any creature if the right size. They will travel inland to forests and far from the beach. They are scavengers and have a good sense of smell.

Which type of Hermit is this?
hermitcrab.jpg (15977 bytes)
Picture by www.subwayscuba.com
 

   

Blackeyed Hermit Crab,
Purple globe crab.

Picture: Tolgus BS-AC
Details awaited.


Picture : Tam Boyd in east Scotland

hermit crab
Hermit crab by http://photos.yahoo.com/magicpudding  in the Philippines

Sand Bubblers: They are specialist feeders sucking microscopic life from between grains of sand. You can see them leaving lots of sand balls on the surface of the beach.  They are able to breath air though thin patches on their legs.

 

The Soldier crab is small but can breath air. they also have a a small ribbon of hair on its backside which sucks up moisture. Some march in small groups, but they can merge and cover an entire beach. They also filter sand and ignore other types of crab. They have lungs, so the incoming water will drown them and they need to stay out of the sea.

 

Ghost crabs are large, live on the dunes and are able to travel 40  body lengths per second (sideways). They're yellow/orange. They have the best vision than any other crab as they have huge eyes.. They capture and eat other crabs. As their shells are thin they have burrows 1 metre deep to reach water.

<picture awaited>

There is also a variety of crab in the Australia desert where temperatures can reach 50C and may not rain for over a year. Their burrows are deep into the soil where they stay without food until it rains, however they do drink. They go to the surface in the cool night where it could be only 4C. They cool down. Then they return below and dew forms on their shell for them to drink! (Well I never!). Once it rains, a female releases her baby crabs into the flood  waters.

In the middle of the Indian ocean there are 65 million red Christmas Island Crabs  in the forest. They eat anything in it like fruit and do not need standing water. They have a kidney to filter out toxic wastes, but they must return to the sea to breed. Around 2 million are killed on the roads! Each female crab holds up to 100,000 eggs in a pouch under her shell which she releases into the sea. <picture awaited>


Crayfish    Freshwater. Details awaited


Cuttlefish

Tend to swim at night and spend the daylight hours partially buried under the sand. Able to change colour very quickly.

Family Cephalopoda.

CuttleFish.jpg (33763 bytes)  
picture from www.Phiphiscuba.com 

 


Picture by www.dive2gether.com


Feather Duster

They have many variations in colour. As you approach them they sense the water movement and snap shut. Once you have gone, or the water movement has returned to normal they rise from their tube and unfold like an umbrella. Their thin feathers catching any passing food.

Family Annelida.

 


Picture by www.oceandivecenter.com Florida, USA

FeatherDuster.jpg (17541 bytes)
Picture by www.subwayscuba.com 


Flatworms


Picture by  www.chaloklum-diving.com in Thailand.

   

Jelly Fish

Box Jellyfish: Found around Australia. DANGER. Often call cubizoids because they have a square shape or Stingers. They are normally coastal dwellers. They breed in the estuaries and usually live their life on the shoreline. The jellyfish season is from November to April.  A sting across the chest or legs can kill you within 2 minutes. They are usually in the top 6-10 feet of the waters surface. It is the most venomous creature in the world- including spiders, snakes etc. Picture of a box jellyfish awaited.

Swimmers get stung on their legs then (foolishly) reach down and grab the jellyfish and stand up, dragging the stinging tentacles across their body.

Picture by www.scubadokodiak.com in Alaska

Jellyfish.jpg (10572 bytes)

Picture by Mark Walton, Dogsbreath Diver

 

Jewel Anemones

JewelAnemones.jpg (59656 bytes)
Picture in the Scilly Isles, UK by James Yonge http://scubadiving.8k.com  

   

Lobster:


Pictures by Tam Boyd, east Scotland

Peacock lobster

PeacockSmasher.jpg (53755 bytes)
Picture by www.prodivebali.com in Bali, Indonesia.

 

Mollusc:    Details and photos awaited.


Nudibranc

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Picture by www.scubadokodiak.com in Alaska.

nudibranc
picture by http://photos.yahoo.com/magicpudding  in the Philippines


Hermissenda nudibranch.
Picture from www.scubaiguana.com  of the Galapagos Islands.

nudibranch_1.jpg (10237 bytes) nudibranch_2.jpg (32243 bytes) nudibranch_3.jpg (32118 bytes) nudibranch_14.jpg (26680 bytes)
Picture copyright by Dave Clarke in 2005 (dave4scuba@hotmail.com)

The very rare Alabaster
or Dirona Albolineata Nudibranch.
Picture by www.divingbccanada.com in British Columbia, Canada.


Octopus

Found all over the world in one form or another. They all have 8 suckered arms and a sack like body. The only solid part is the beaklike jaw. They are able to change colour easily and continuously. They tend to feed at night and hide during the day in caves and crevices.

The Mimic octopus is found in Indonesia. It swims in open water appearing like a Flounder or a Lion Fish. On the sea bed it mimics a sea snake when attacked, mimicking the black and white stripes. 

All cephalopods are eaten by fish, sea lions, seals and whales. They like to eat crabs and shrimps.

Family Cephalopoda.

Octopus.jpg (799328 bytes) 
Picture by Big Col, Dogsbreath Divers chairman in the Red Sea 2002

Octopus.jpg (29294 bytes) 
Picture: www.Phiphiscuba.com

We would just like to say 'thank you' for providing pictures for our pages.


Picture - Tolgus BS-AC , Red Sea. 

Picture by www.oceanquestdivecenter.com Florida USA

Picture by Steven McCusker in the North Red Sea, Nov 02


Picture copyright by Graeme Hart and courtesy of RandSea Divers Co Ltd, Tobago Web.

The male blanket octopus is small, just 2 centimetres (3/4 inch) long. Whereas the female can be up to 2 metres/6ft. After mating, the male dies.


Picture by Caver Colin, Dogsbreath Diver in Aqaba, Jordan

 ... and these are by Tam Boyd in the May Isle in the Firth of Forth, Scotland


Prawns: Details and photos awaited.  Laurenco Marques prawns - enormous and delicious. Harvested in Mozambique.


Plankton    These are the living foundation stones of all marine life. There are over 10,000 varieties of microscopic plants and animals. The word plankton is derived from the Greek word meaning wanderer. They fall into two categories:

 
  • Phytoplankton, which are plant like algae. They rely on sunlight for photosynthesis, carbon dioxide and dissolved minerals to live. Divers normally only notice them when there is an algae bloom or red tide as they both decrease visibility.

<photos awaited - please>

 
  • Zooplankton, which are tiny marine animals (which eat phytoplankton). These include minute marine forms and the young of others such as larval fish, starfish, crab etc that eventually grow to adults and copepods (tiny crustaceans).

Picture by www.scubadokodiak.com in Alaska

 


Rays

Torpedo ray. The torpedo ray (electric ray) stuns its prey with an electrical charge strong enough to pose a threat to divers, but they have rarely shocked humans. The Pelagic ray Dasyatis violacea lives and hunts in the waters of the open ocean surfacing  during periods of low light or night. Distribution: all warm waters.

Cayman Islands, British West Indies. Hand feed the rays in Stingray City.
Oman, Musendam Peninsular
Spain, Tenerife Hand feed the rays in Los Gigantes, Tenerife.

 

 
Blue spotted Ray. Picture by Steven McCusker in the North Red Sea, Nov 02

   

Manta Rays:

They have a wingspan of 3m and are filter feeders. Found in Indonesia, Indian and Pacific Oceans.

 
Picture www.scubaiguana.com 


Picture, Tolgus BS-AC


Picture, Tolgus BS-AC www.tolgus.com 


Sea Pen


Picture by www.divingbccanada.com in British Columbia, Canada.

   

Sea Cucumber

Family echinoderms.


Picture by www.Chaloklum-diving.com in Thailand.

   

Sea Snakes are very poisonous.

A big anaconda snake can drag you from the beach and into the water to drown you. (put your hands together flat, keep your wrists touching and pull your finger tips apart - that is the size of a big mouth and they do not let go for a few hours).


Picture by www.phiphi-scuba.com

Sea snake in Thailand Sea snake by Mark Walton dogsbreathdiver
 Pictures by Mark Walton, Dogbreathdiver in Thailand

Coral snake's venom destroys the human nervous system within 3 minutes. The snake can grow to 3 feet/1 metre and is alternately banded black/white along its whole length like a mint humbug.  It digs and burrows in the sand for food.

Sea Urchin: Family echinoderms.


Black urchin

Picture by Caver Colin, Dogsbreath Diver in Aqaba, Jordan.

 

Excellent and copyrighted pictures at: http://earthwindow.com .


Shrimps.   Since the depletion of Cod stocks shrimps in Newfoundland and the UK have significantly increased in numbers.

kakureebi.jpg (26831 bytes)
Picture: www.tokyoscuba.com in Japan. 

   

Sponges

There are around 5000 species of sponges and range from a fraction of a centimetre to 2 metres/6' 6" wide and tall. They have simple body structures of two cell layers surrounding a central cavity. The internal canals can be very intricate. Adult sponges are always attached to a solid substrate. All sponges are capable of direct sexual reproduction. Most can produce eggs and sperm in the same body but it tends to be at different times. Fertilised eggs develop into larvae which are expelled from the sponge which eventually fix to a solid surface and grow. It tends to be rocks, but could be a crabs shell.

Family Phylum Porifera.


Cloud sponge by www.suncoastdivers.com in Canada


Sponge near Aphro Rock, Mannijan Island, Cyprus by Tam Boyd

Algaesponge.gif (114378 bytes)
This rock is covered with Calcareous sponges. They inhabit marine water down to 75 metres/220feet all over the world. Often found growing on snails, crabs and scallops.

Encrusting sponges

Encrusting sponges by www.seawolfdivingschool.com in Montserrat.

Barrel Sponges:

 

Picture by Tamworth John in Mexico. The left one is over two foot wide. They are very delicate, so don't climb into one as they take many years to recover from minor damage, and may not recover from major damage.

Coral.jpg (1006747 bytes)
Sponge-Common name is Leather
Picture by Anorak, Dogsbreath diver
 


Squid

Family Cephalopoda.

web cam - www.squidcam.info 


Picture Tolgus BS-AC


Picture by Steven McCusker in the North Red Sea, Nov 02

 

Starfish:

Family echinoderms.  


Crown of Thorns starfish
Picture: Justin in te Maldives Oct 03

Picture by www.scubadokodiak.com in Alaska.


Crown of Thorns starfish
Picture: Justin in
the Maldives Oct 03

MikeCoiba7panama.jpg (100466 bytes)

Picture by Mike of www.twinoceans.com in Panama

Oman Starfish2.jpg (183617 bytes)This starfish is actually light green, but the camera flash made it almost transparent. Believed to be a sand dollar, full identification awaited.

Pictures: Anorak, Dogsbreath Diver. Oman.

 

star fish by Mark Walton, dogsbreathdiver in Thailand
picture by Mark Walton Dogsbreath diver in Thailand

 

Zooplankton

Zooplankton are the animal forms in plankton. These include all life forms that we tend to call jellyfishes, forms similar to worms and the free swimming life found in open water. e.g. Man-of-war jellyfish,  Physalia physilis; Pegea confoederata, Chrysaora fuscescens, Cyclosalpa affinis, Corolla spectablis, Salps, Pyrosoma tuberculata, 

There are excellent pictures at:   http://earthwindow.com/zoo.html  Copyright © Mike Johnson. All rights reserved.


Unknown  Please help us identify these:

Inverts/plants 1

MaltaPlant1.jpg (22092 bytes)

We would just like to say 'thank you' for providing pictures for our pages.
Anemone 1

Copyright www.siburesort.com  
Copyright www.siburesort.com

Coral 2,3,4 & 5

Pictures by Anorak, DBDiver

Coral2.jpg (852790 bytes) Coral3.jpg (656424 bytes) Coral6.jpg (685728 bytes) Coral7.jpg (985831 bytes)

6 & 7, 8, 9, 10 & 11 & 12 Pictures by Anorak, DBDiver

Coral13.jpg (522835 bytes) Coral14.jpg (670951 bytes) CupCoral.jpg (852790 bytes) FanCoral4.jpg (1002286 bytes) FanCoral1.jpg (770201 bytes) FanCoral2.jpg (714678 bytes) FanCoral3.jpg (688342 bytes)