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Sea Hare (Aplysia dactylomela)

Find Sea Hare across reef-livestock retailers and from fellow hobbyists on ReefDock. Compare sources, check live pricing where available, and review source-tank parameters on Reef-Trak-verified invertebrate listings before you buy.

Sea Hare
Photo: (c) Craig Hoover, some rights reserved (CC BY-NC), uploaded by Craig Hoover · cc-by-nc
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Where to buy Sea Hare

ReefDock searches the following reef retailers for this invertebrate. Click through to see the live price.

  • Saltwaterfish

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    Search Saltwaterfish
  • Amazon

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    Search Amazon
  • Petco

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    Search Petco

About Sea Hare

Large brown, tan, or mottled reddish-brown body with a soft, slug-like form and prominent ear-like rhinophores. Can reach 10+ inches and expels purple dye when threatened.

Key facts

Min tank size
55 gallons
Compatibility
Sea hares are solitary herbivores that generally ignore fish and invertebrates. They may occasionally compete with other grazers for algae but pose no direct threat to tank-mates.
Origin
Western Atlantic, including the Caribbean Sea, Gulf of Mexico, and along the coast from Florida to Brazil.
Family
Aplysiidae
Diet Details
Herbivorous; feeds on macroalgae, microalgae, and detritus. Prefers Caulerpa, Ulva, and other soft algae. Requires established algae growth or regular supplementation of algae sheets.
Water Parameters
Temperature: 72-78°F pH: 8.1-8.3 Salinity: 1.023-1.025
Category
Other
Care Level
Moderate
Notes
• Minimum 55 gallon tank with plenty of algae and macroalgae growth as primary food source • Requires stable water conditions at 72–78°F (pH 8.1–8.3, SG 1.023–1.025) • Nocturnal grazer; provide dim lighting and numerous hiding places • Can be sensitive to sudden water changes and copper-based medications • May release toxic compounds when stressed, which can harm tank mates and affect water quality
Appearance Description
Large brown, tan, or mottled reddish-brown body with a soft, slug-like form and prominent ear-like rhinophores. Can reach 10+ inches and expels purple dye when threatened.
Max Size
8
Type
Other

Looking for a hobbyist seller?

ReefDock's marketplace lets reef-keepers sell invertebrates directly to other reef-keepers with Stripe-secured checkout and live-arrival photo confirmation. Browse current invertebrates listings on ReefDock, or list your own.

Verify the source tank before you buy

ReefDock is the sister app to Reef Trak. Sellers who maintain a Reef Trak tank log can publish source-tank parameters on eligible invertebrate listings — so you can see the conditions a invertebrate was raised in before you buy. Log this invertebrate on Reef Trak.

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