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Underwater Angels

Short answer: Sea angels (order Gymnosomata, part of the pteropods) are small, shell-less marine snails. Their translucent, gelatinous bodies carry two wing-like flaps that they beat to swim.

They live in cold seas, from the surface to deeper water, and feed mainly on shelled pteropods called sea butterflies. The footage shows sea angels swimming.

VideoWrite-up2 sources
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What should you know about Underwater Angels?

Quick facts. Each one stands alone and has a stable ID you can cite.

  1. Sea angels are marine snails.

    DD-310-F01 · Write-up · Exhibit A (Snails)

  2. Adults have no shell.

    DD-310-F02 · Write-up · Exhibit B (No shell)

Video transcript: Underwater Angels: Sea Angels Are Snails That Swim With Wing-Like Flaps

Sea angels are small marine gastropods that belong to Pteropoda. These creatures are translucent, known for their gelatinous bodies and wing-like flaps that resemble angel wings, which they use for swimming. They inhabit cold, deep ocean waters and feed on tiny planktonic organisms. Sea angels are [...] unique appearance and behavior, [...] method of locomotion and their role in the marine food web. Their delicate, ethereal beauty and fascinating adaptations [...] subject of interest in marine biology. NOW YOU KNOW!

Burned-in captions, read frame by frame (see transcript.md) · 27.2s Reel ·

Video coming soonUnderwater Angels · Instagram Reel
Underwater Angels: Sea Angels Are Snails That Swim With Wing-Like Flaps Instagram Reel · · 27.2s

The write-up

Sea angels are snails that swim with wing-like flaps. They hunt sea butterflies, their shelled cousins.

  1. Exhibit A

    Snails

    Sea angels are marine snails.

  2. Exhibit B

    No shell

    Adults have no shell.

  3. Exhibit C

    Wings

    They swim with wing-like flaps.

  4. Exhibit D

    Cold seas

    They live in cold seas.

  5. Exhibit E

    Prey

    They eat sea butterflies.

Questions people ask about Underwater Angels

What kind of animal is a sea angel?

A gastropod.

Source: Write-up · Exhibit A (Snails) · Wikipedia: Gymnosomata

How do they swim?

Like wings.

Source: Write-up · Exhibit B (No shell) · Wikipedia: Gymnosomata

Do adults have shells?

Shell-less.

Source: Write-up · Exhibit C (Wings) · Wikipedia: Gymnosomata

What do they eat?

Shelled pteropods.

Source: Write-up · Exhibit D (Cold seas) · Wikipedia: Clione limacina

Where do they live?

Polar and cold waters.

Source: Write-up · Exhibit E (Prey) · Wikipedia: Gymnosomata; Wikipedia: Clione limacina

Test Your Knowledge

All quizzes →

5 questions, all from this case file. Answers are revealed instantly.

  1. What kind of animal is a sea angel?

    1. A sea snail
    2. A fish
    3. A jellyfish
    4. A worm
    Show the answer

    Answer: A. A sea snail A gastropod. Source: Write-up · Exhibit A (Snails) · Wikipedia: Gymnosomata

  2. How do they swim?

    1. Flapping wing-like lobes
    2. Jet propulsion
    3. Tail fins
    4. They drift only
    Show the answer

    Answer: A. Flapping wing-like lobes Like wings. Source: Write-up · Exhibit B (No shell) · Wikipedia: Gymnosomata

  3. Do adults have shells?

    1. No
    2. Yes, large ones
    3. Only males
    4. Only in winter
    Show the answer

    Answer: A. No Shell-less. Source: Write-up · Exhibit C (Wings) · Wikipedia: Gymnosomata

  4. What do they eat?

    1. Sea butterflies
    2. Kelp
    3. Sharks
    4. Sand
    Show the answer

    Answer: A. Sea butterflies Shelled pteropods. Source: Write-up · Exhibit D (Cold seas) · Wikipedia: Clione limacina

  5. Where do they live?

    1. Cold seas
    2. Hot springs
    3. Rivers
    4. Deserts
    Show the answer

    Answer: A. Cold seas Polar and cold waters. Source: Write-up · Exhibit E (Prey) · Wikipedia: Gymnosomata; Wikipedia: Clione limacina

Cite this case file

Easterling, Marcus. "Underwater Angels." The Detail Department (DetailEnjoyer), case file DD-310, last updated Aug 28, 2024. https://detailenjoyer.com/case/underwater-angels/

Permalink: https://detailenjoyer.com/case/underwater-angels/ · Last updated

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