A220L4_team1 by https://padlet.com/220154081/6xr51g017umew4v1 en-us 2022-11-10 04:33:47 UTC 2026-01-04 22:17:53 UTC hello@padlet.com Comb jellies - Phylum Ctenophora (comb bearers) 22031888_2 https://padlet.com/220154081/6xr51g017umew4v1/wish/2378000376 • Basal eumetazoans (animals with tissues and organs)
• Comb jellies possess eight rows of fused cilia (‘hair’) known as combs for movement through water.
• Swallow the prey whole to be digested by enzymes.
• Comb jellies tentacles possess cells called
colloblasts that produce sticky strands to trap prey.
• Have a nerve net, but lacks a complicated nervous system. 
]]> 2022-11-10 04:42:27 UTC https://padlet.com/220154081/6xr51g017umew4v1/wish/2378000376 body components - keira 220154081 https://padlet.com/220154081/6xr51g017umew4v1/wish/2378006022 - Their bodies are mostly water (about 95%) with only 5% of solid matter.
- they lack organs like brain and hearts, and hence do not have blood. However, have an elementary nervous system that helps them detect light, smell and respond to other stimuli. They also have a digestive system containing a stomach, intestine, mouth and anus. (mouth and anus are the same opening)
- They are made of 3 layers, Epidermis (the outer layer), mesoglea (middle layer), which is made of a thick, elastic and jelly-like substance, and gastrodermis ( inner layer)
- body parts: oral arms, hood, stomach pouch, eye spots, gonads, mouth/anus and tentacles

references:
- NOAA(2021) What are jellyfish made of? Available at: What are jellyfish made of? (noaa.gov) (accessed: 10/11/2022)
- sea jelly body components - Bing images]]> 2022-11-10 04:47:26 UTC https://padlet.com/220154081/6xr51g017umew4v1/wish/2378006022 Habitat 22031888_2 https://padlet.com/220154081/6xr51g017umew4v1/wish/2378007265 - Marine creature (does not live in fresh water)
- found in every ocean in the world, although most species prefer warmer water.

Reference:
Available at: https://ocean.si.edu/ocean-life/invertebrates/jellyfish-and-comb-jellies (Accessed: 10 November 2022)

]]> 2022-11-10 04:48:27 UTC https://padlet.com/220154081/6xr51g017umew4v1/wish/2378007265 The comb jelly is ancient (Jonathan) https://padlet.com/220154081/6xr51g017umew4v1/wish/2378013022 According to the Smithsonian National Museum of Natural history, the comb jellies are at least 500 million years old.

Fun facts about comb jellies. (n.d.). Retrieved November 10, 2022, from https://www.florida-adventurer.com/blog/fun-facts-about-comb-jellies- ]]> 2022-11-10 04:53:14 UTC https://padlet.com/220154081/6xr51g017umew4v1/wish/2378013022 Comb jellies are cannibals (Jonathan) https://padlet.com/220154081/6xr51g017umew4v1/wish/2378015119 Comb jellies can eat others of their own kind, even ones that are larger than themselves. They do this by biting off chunks from prey using special cilia structures in their mouth.

Fun facts about comb jellies. (n.d.). Retrieved November 10, 2022, from https://www.florida-adventurer.com/blog/fun-facts-about-comb-jellies- ]]> 2022-11-10 04:54:53 UTC https://padlet.com/220154081/6xr51g017umew4v1/wish/2378015119 Ctenophores are able to produce light (bioluminescent) lihao https://padlet.com/220154081/6xr51g017umew4v1/wish/2378017685 Comb jellies are able to produce lights due to them possessing genes that create calcium activated proteins called photoproteins in cells called photocytes. When activated, these proteins produce light, allowing for the cells in the comb jelly to light up.
  • These lights can allow for:
  • Scaring off of predators 
  • Attracting prey
  • Communication with own species



Reference:Genome.gov. (n.d.). Bioluminescent comb jellies begin to shed light on the evolution of vision. [online] Available at: https://www.genome.gov/27551984/2012-news-feature-bioluminescent-comb-jellies-begin-to-shed-light-on-the-evolution-of-vision#:~:text=Comb%20jellies%27%20ability%20to%20generate [Accessed 10 Nov. 2022].




]]> 2022-11-10 04:56:51 UTC https://padlet.com/220154081/6xr51g017umew4v1/wish/2378017685 Comb Jellies - Digestive tract 22031888_2 https://padlet.com/220154081/6xr51g017umew4v1/wish/2378026410 is constituted by a complex network of meridional channels that cross the periphery towards the inner portion of their central digestive channel. Digested foods can be excreted through the mouth or anal pores. 

Reference:
Available at: https://ourmarinespecies.com/c-other-species/comb-jellies/ (Accessed: 10 November 2022)

]]> 2022-11-10 05:05:05 UTC https://padlet.com/220154081/6xr51g017umew4v1/wish/2378026410 diet - keira 220154081 https://padlet.com/220154081/6xr51g017umew4v1/wish/2378035210 - mainly zooplankton (plankton live mostly on the surface, so sea jellies float near the surface to obtain zooplankton)
- other sea jellies
- crustaceans ( e.g. lobster, shrimp, crabs) : harder for sea jellies to catch and digests so are not a main source of energy for them.
- plants (e.g. seaweed, algae, phytoplankton) : only when they are young
- small fishes and their eggs
references:
- American Oceans (N.d) What do jellyfish eat? Available at: What Do Jellyfish Eat & How Do They Do It? - American Oceans (accessed: 10/11/2022) 


]]> 2022-11-10 05:12:24 UTC https://padlet.com/220154081/6xr51g017umew4v1/wish/2378035210 Main Types of Comb Jellies: Cydippids, Lobates, and Beroids 22031888_2 https://padlet.com/220154081/6xr51g017umew4v1/wish/2378035453 Cydippids:
All have rounded bodies—some spherical, some oval—with branched tentacles. (This means that their tentacles are fringed with smaller tentacles.) These tentacles can be withdrawn into the jelly's body into special sheaths or pouches on either side of their mouths.

Lobates:
Defined by two flattened lobes that extend from the typical rounded ctenophore body down below their mouths. They also have short tentacles and tend to grow larger than cydippids.

Beroids:
(Also known as "nuda") are sack-shaped and have no tentacles at all—but they do have a very large mouth, which they can zip shut very tightly.

Open ocean ctenophores are much less known. They come in a great diversity of forms. Some are shaped like belts (Cestida), while others don't float in the water column at all, but live on the seafloor! (These are known as benthic ctenophores.)

Reference:
Available at: https://ocean.si.edu/ocean-life/invertebrates/jellyfish-and-comb-jellies (Accessed: 10 November 2022)

]]> 2022-11-10 05:12:36 UTC https://padlet.com/220154081/6xr51g017umew4v1/wish/2378035453 Comb jellies reproductive life cycle - Lance https://padlet.com/220154081/6xr51g017umew4v1/wish/2378071606 Depending on the species on the comb jellies, some comb jellies are polymorphic, which alternates between the polyp and medusa during its life cycle. One of the polyps is used for asexual reproduction by budding. When these buds become mature and breakoff and releases the free-moving medusas. 
The reproduction life cycle can also go through sexually partly due to the medusas either being a male or female. After fertilization, the blastula develops into the planula larvae.  Once the larvae attach to the substrate, it forms a new polyp. An example of a sea jelly is the mauve stinger, which reproduce both sexually and asexually


Reference: L04 lecture slides and BBC Wildlife Issue 7 Volume 40, June 2022
 ]]> 2022-11-10 05:50:36 UTC https://padlet.com/220154081/6xr51g017umew4v1/wish/2378071606 why is this cooler than the rest? (lihao) https://padlet.com/220154081/6xr51g017umew4v1/wish/2378129773 Cnidarians can sting you and hurt you. You can't play with it but with the comb jelly, you can pick it up and play with it so comb jelly> Cnidarians
Comb Jelly > sponges because they can swim sponges only can filter feed. Quite boring. Hence forth.

]]> 2022-11-10 06:50:07 UTC https://padlet.com/220154081/6xr51g017umew4v1/wish/2378129773