For the First Time, Scientists Find Jellyfish-Like Animal With ‘Transient’ Anus

SaskiaAcht/iStock.com
SaskiaAcht/iStock.com

Compared to other parts of anatomy, the anus is underappreciated—but without a way to expel waste from the body, all the work that takes places at other stages of digestion wouldn't be good for much. Now scientists may have a better understanding of how the anus evolved after identifying the first "transient" anus in jellyfish, New Scientist reports.

As biologist Sidney L. Tamm reports in the journal Invertebrate Biology, the warty comb jelly (which is really a type of ctenophore, not a cnidarian like true jellyfish) doesn't have a visible anus most of the time. While studying the comb jelly, he discovered it forms one only when it needs to defecate. When waste builds up, the creature's gut or gastrodermis expands until it touches the outer layer known as the epidermis. At this point, the gastrodermis and the epidermis fuse together and form an orifice where there wasn't one before. Waste is disposed of through the newly opened anus, and once the jelly has finished its business, the hole closes up again and the gut and the epidermis go back to being two separate layers.

These two components each consist of a single cell layer, so the anal opening forms quickly. Mature warty comb jellies have to grow a new anus every hour or so, while their larvae do it about once every 10 minutes.

Jellyfish and comb jellies are simple organisms, with one inner tract instead of a more complex system of organs. Some jellies have one opening in their gastrodermis they use for eating, expelling waste, and exchanging reproductive materials. The discovery of the warty comb jelly's transient anus shows how this one-orifice system may have evolved into a tract with a permanent anus millions of years ago.

Comb jellies are some of the oldest animals on Earth, with ancestors appearing as far back as 700 million years ago. Scientists believe they helped set the evolutionary groundwork for systems that are essential to complex life today, such as the nervous system and digestive tract.

[h/t New Scientist]

Rhode Island Approves Bill to Create an Animal Abuser Registry

iStock/Kerkez
iStock/Kerkez

In what could be a major step toward curbing animal cruelty, Rhode Island just passed a bill requiring convicted abusers to be placed on a statewide registry. The objective? To make sure they don’t adopt another animal.

According to KUTV, the bill was approved by the Rhode Island House of Representatives on Thursday and is awaiting Senate approval. Under the law, anyone convicted of abusing an animal would be required to pay a $125 fee and register with the database. The collection of names will be made available to animal shelters and adoption agencies, which will be required to check the registry before adopting out any pets. If the prospective owner’s name appears, they will not be permitted to adopt the animal.

Convicted abusers have five days to register, either from the time of their conviction if no jail time is mandated or from the time of their release. The prohibition on owning another animal lasts 15 years. If they're convicted a second time, they would be banned for life.

A number of communities across the country have enacted similar laws in recent years, including Hillsborough County in Florida, Cook County in Illinois, and New York City. The state of Louisiana was fielding a bill last week, but the proposal was ultimately pulled from committee consideration after a critical response from the American Society for the Prevention of Cruelty to Animals (ASPCA). The group’s policy statement argues that registries are costly to maintain, not often utilized by adoption centers, and don’t address the potential for abusers to find animals in other ways. The group also asserts that registries may influence potential convictions, as defendants and their legal representation might plea to lesser charges to avoid being placed in the database. The ASPCA instead recommends court-mandated no-contact orders for convicted animal abusers.

[h/t KUTV]

This Inflatable Sloth Pool Float Is the Perfect Accessory for Lazy Summer Days

SwimWays
SwimWays

Summer is the perfect time to channel your inner sloth. Even if you don't plan on sleeping 15 to 20 hours a day, you can take inspiration from the animal's lifestyle and plan to move as little as possible. This supersized sloth pool float from SwimWays, spotted by Romper, will help you achieve that goal.

It's hard not to feel lazy when you're being hugged by a giant inflatable sloth. This floating pool chair is 50 inches long, 40 inches tall, and 36 inches wide, with two "arms" to support you as you lounge in the water.

One of the sloth's paws includes a built-in cup holder, so you don't have to expend any extra energy by getting up in order to stay hydrated. Unlike some pool floats, this accessory allows you to sit upright—which means you can drink, read, or talk to the people around you without straining your neck.

The sloth floatie is available for $35 on Amazon or Walmart. SwimWays also makes the same product in different animal designs, including a panda and a teddy bear. And if you're looking for a pool accessory that gives you even more room to spread out, this inflatable dachshund float may be just what you need.

People sitting in animal pool floats.
SwimWays

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