stingray near coral reef
Wildlife Group10 species guides

Rays

Rays are flattened cartilaginous fishes that range from buried coastal stingrays to cruising mantas and eagle rays, making them one of diving's broadest encounter groups.

Last Updated Mar 9, 20264 research sources
Photo byDavid Clode

Group Guide

What to know about rays

A group-level field guide built to move divers from broad intent into the right species, destinations, and encounter planning.

Overview

Rays sit inside the batoid branch of cartilaginous fishes, alongside skates, sawfishes, guitarfishes, and rhino rays. For divers, that means the Rays bucket covers very different encounters: buried Stingrays on sand, midwater Eagle Ray passes, and cleaning-station visits from Giant Oceanic Manta Ray.

Most rays share the same broad underwater silhouette: enlarged pectoral fins fused to the head, a flattened disc, and eyes and spiracles high on the body. In many bottom-feeding species, the mouth sits underneath the body so the animal can feed while staying close to sand or rubble.

Where Divers Meet Them

Many rays are coastal or reef-associated and spend much of their time over sand flats, lagoons, reef edges, seagrass beds, and channels. Others are much more mobile. Mobulid rays can travel in schools and make very deep dives, while many skates are more closely tied to colder bottom habitats.

Feeding and Behavior

Rays do not all feed the same way. Many stingrays, skates, and eagle rays hunt benthic invertebrates, mollusks, crustaceans, and small fishes. Mobulid rays are the obvious exception, filtering plankton from the water column. That difference matters underwater: a bottom-resting ray is often feeding or sheltering close to structure, while mantas and devil rays are more likely to be cruising current lines or cleaning stations.

Conservation Outlook

Rays are part of the wider global shark-and-ray conservation crisis, with fishing pressure and bycatch remaining the main recurring threats across the group. Risk is uneven, but it is often highest for slow-growing species and for rays caught in coastal fisheries or traded internationally. Management can help, yet protections still vary sharply by species and region.

This group guide pulls together 10 published rays guides so divers can move from broad trip intent to the right species pages, destinations, and dive spots faster.

Many ray and skate species are now threatened or endangered, and global shark-and-ray assessments point to overfishing and bycatch as the dominant drivers. The risk is not uniform, but slow growth, low reproductive output, coastal habitat pressure, and international trade all make recovery difficult for several ray lineages. Progress depends on enforceable fishery limits, bycatch reduction, habitat protection, and species-specific trade controls where they exist.

Movement and Range

Rays occur from shallow tropical reefs to deep temperate seafloors. Many of the rays divers see most often are local bottom-associated animals that patrol sand patches, reef margins, and channels, but mobulid rays are much wider-ranging and can move offshore, school seasonally, and dive deep.

That spread matters for trip planning. A ray encounter on a sheltered reef flat is a very different proposition from a seasonal manta aggregation or an open-water eagle-ray pass on a current line.

Kauai Hawaii Usa and Playa Del Carmen Mexico currently stand out as strong destination entry points for rays planning.

Germany, Saudi Arabia, and Mexico are some of the clearest country-level starting points for this group right now.

How to identify rays

Flattened disc and wing-like fins

Most rays have a flattened body with enlarged pectoral fins fused to the head, creating the broad disc-shaped outline divers recognize immediately.

Eyes and spiracles on top

Many bottom-associated rays keep the eyes and spiracles high on the body so they can breathe while lying on or partly inside sand.

Underslung feeding mouth

In many benthic-feeding rays, the mouth sits on the underside of the body, which helps them feed on prey in or just above the seabed.

Field notes

Rays are a huge group

The batoid superorder includes more than 600 species spread across rays, skates, sawfishes, guitarfishes, and related lineages.

Mobulid rays are capable of extreme dives

Schooling mobula rays are not only surface-active; published museum guidance notes that some can dive to more than 2,000 meters.

Bottom-feeding anatomy is highly specialized

Many rays combine a flattened body, top-mounted spiracles, and an underslung mouth so they can stay close to sand while feeding and ventilating.

Range and movement

Movement and Range

Rays occur from shallow tropical reefs to deep temperate seafloors. Many of the rays divers see most often are local bottom-associated animals that patrol sand patches, reef margins, and channels, but mobulid rays are much wider-ranging and can move offshore, school seasonally, and dive deep.

That spread matters for trip planning. A ray encounter on a sheltered reef flat is a very different proposition from a seasonal manta aggregation or an open-water eagle-ray pass on a current line.

What members of this group tend to eat

Many rays feed on benthic invertebrates and small fishes, using an underslung mouth to work close to the seabed. Mobulid rays break the pattern by filtering plankton from the water column.

Conservation

Rays conservation context

A group-level read on the pressures, protections, and diver behavior that matter most across these species.

Many ray and skate species are now threatened or endangered, and global shark-and-ray assessments point to overfishing and bycatch as the dominant drivers. The risk is not uniform, but slow growth, low reproductive output, coastal habitat pressure, and international trade all make recovery difficult for several ray lineages. Progress depends on enforceable fishery limits, bycatch reduction, habitat protection, and species-specific trade controls where they exist.

Responsible encounters

Responsible Encounters

Give rays room to choose the interaction. Approach slowly from the side, stay off the bottom when a ray is resting or partly buried, and do not block a cleaning station or flight path for mantas and eagle rays.

Never touch, chase, or try to force a lift-off for a photo. If a ray speeds up, changes direction sharply, or repeatedly banks away from the group, treat that as a cue to increase distance.

Main threats

Fishing pressure

Targeted capture and retention in coastal and offshore fisheries remain major pressures for many ray species, especially slow-growing lineages.

Bycatch

Rays are frequently caught unintentionally in trawl, gillnet, and other fisheries, which can drive severe declines even when the species is not the original target.

Habitat and trade pressure

Coastal nursery loss, disturbance on heavily used flats and reef edges, and international trade in products from some ray lineages add further pressure on top of direct fishing mortality.

Protections

Fishery limits and bycatch controls

Where they are well enforced, catch limits, gear rules, and bycatch mitigation can reduce mortality and give depleted ray populations a better chance to recover.

Species-specific trade controls

International trade protections now cover some of the highest-profile ray lineages, but coverage and enforcement still vary by species and region.

Habitat protection

Protecting nursery areas, feeding grounds, and aggregation sites is especially important for coastal rays and for predictable manta and devil-ray encounter sites.

Species

Species in Rays

Jump into the individual species pages that currently sit inside this wildlife group.

Top Destinations

Top destinations for rays

Destinations surfaced from the linked dive spots associated with species in this group.

Top Countries

Top countries for rays

The strongest country-level starting points currently linked to this wildlife group.

Top Dive Spots

Top dive spots for rays

Directly linked dive spots where species in this group already show up in the planning data.

FAQ

Rays diving FAQ

Direct answers to the questions divers and planners tend to ask first.

Research Sources

Rays information sources

Primary and supporting references used for the published group guide.

Florida Museum: Skates and Rays Biology · Museum Profile · Florida Museum of Natural History

Body plan, top-mounted eyes and spiracles, underside mouth placement, and benthic feeding adaptation.