SeaRealm Logo
Deep SeaInvertebrate

Deep Cucumber

Holothuroidea

A squishy recycler vacuums the ocean floor.

Deep cucumbers are soft-bodied relatives of sea stars that creep across the mud. They swallow or sift old organic bits, turning leftovers into cleaner seafloor sediment.

Find this SeaPal in the card gallery
SeaRealm card featuring Deep Cucumber

From field guide to game table

Bring this Deep Cucumber home

See which ready-to-play decks feature this SeaPal. Try one in the simulator before you buy, or explore each full deck list.

1 deck

Quick dive

Creature passport

Home
Different species live on deep seafloors around the world.
Favorite foods
Most feed on detritus and tiny food particles in or above the mud.
Size check
Often around 8 in (20 cm), though species vary greatly

Tell-your-friends facts

Four wonderfully wild things

  1. 1

    Sea cucumbers are echinoderms, the same major group as sea stars and urchins.

  2. 2

    The feeding tentacles around the mouth are modified tube feet.

  3. 3

    Tiny calcium pieces called ossicles support the otherwise soft body.

  4. 4

    Some deep-sea species flap or paddle above the bottom instead of only crawling.

Ocean superpower

Built to be amazing

It recycles sunken leftovers and returns nutrients to the deep-sea food web.

Junior scientist tip

What should I look for?

Look for a soft cucumber-shaped body with feeding tentacles at one end.

Grown-up research links

We used trusted science organizations to check this profile.